Most refs prefer 水溜まり.
溜 isn't a jōyō kanji, so there's not an "official" okurigana AFAIK.

Kyoto/Melbourne N-gram Corpus Counts
╭─ーーーーー─┬───────┬───────╮
│ 水溜り　　 │ 5,471 │ 32.9% │
│ 水たまり　 │ 8,726 │ 52.5% │ - move up
│ 水溜まり　 │ 1,917 │ 11.5% │ - sK
│ 水溜　　　 │   289 │  1.7% │ - [io] to [sK]
│ みずたまり │   208 │  1.3% │
╰─ーーーーー─┴───────┴───────╯

@@ -4,3 +3,0 @@
-<k_ele>
-<keb>水溜り</keb>
-</k_ele>
@@ -12,0 +10,3 @@
+<keb>水溜り</keb>
+</k_ele>
+<k_ele>
@@ -13,0 +14 @@
+<ke_inf>&sK;</ke_inf>
@@ -17 +18 @@
-<ke_inf>&io;</ke_inf>
+<ke_inf>&sK;</ke_inf>

G n-grams:
水溜り	201798
水たまり	195288
水溜まり	 36977
水溜	  7563
みずたまり	 23545

reordering

@@ -3,0 +4,3 @@
+<k_ele>
+<keb>水溜り</keb>
+</k_ele>
@@ -11,3 +13,0 @@
-</k_ele>
-<k_ele>
-<keb>水溜り</keb>

@@ -15,0 +15,4 @@
+<k_ele>
+<keb>水溜</keb>
+<ke_inf>&io;</ke_inf>
+</k_ele>

May as well hide the katakana form too.

@@ -28 +28 @@
-<re_nokanji/>
+<re_inf>&sk;</re_inf>

野良猫　 507,758  63.6% 
ノラ猫　  98,025  12.3% -sK
のら猫　  48,296   6.1% -sK
野良ネコ  13,823   1.7% -sK
のらねこ  69,642   8.7% 
ノラネコ  60,277   7.6%

@@ -10,0 +11 @@
+<ke_inf>&sK;</ke_inf>
@@ -13,0 +15 @@
+<ke_inf>&sK;</ke_inf>
@@ -16,0 +19 @@
+<ke_inf>&sK;</ke_inf>

@@ -21,0 +22,4 @@
+</r_ele>
+<r_ele>
+<reb>ノラネコ</reb>
+<re_nokanji/>

G n-grams:

野良猫	507758
ノラ猫	98025
のら猫	48296
野良ネコ	13823
野良ねこ	3508

のらねこ	69642
のらネコ	11373
ノラネコ	60277
ノラねこ	1344

@@ -9,0 +10,3 @@
+<keb>ノラ猫</keb>
+</k_ele>
+<k_ele>
@@ -10,0 +14,3 @@
+</k_ele>
+<k_ele>
+<keb>野良ネコ</keb>

Sankoku, Meikyo, GG5

missing transitivity tags

Pretty sure "being left unattended to" is ungrammatical and doesn't convey anything meaningful.
"Leaving unattended" should be a better gloss

@@ -22,0 +23,2 @@
+<pos>&vt;</pos>
+<pos>&vi;</pos>
@@ -29,0 +32,2 @@
+<pos>&vt;</pos>
+<pos>&vi;</pos>
@@ -36,2 +40,2 @@
-<gloss>being left unattended to (of one's studies, etc.)</gloss>
-<gloss>neglecting</gloss>
+<gloss>neglecting (e.g. one's studies)</gloss>
+<gloss>leaving unattended</gloss>

留守 1,174,886  95.6% 
留主       820   0.1% -rK (daijs)
るす    53,017   4.3%

@@ -11,0 +12 @@
+<ke_inf>&rK;</ke_inf>

600k googits for "留守の家"

@@ -21,0 +22 @@
+<pos>&adj-no;</pos>
@@ -33 +33,0 @@
-<pos>&vs;</pos>

All the kanji forms are in references.

@@ -11,0 +12 @@
+<ke_inf>&rK;</ke_inf>

＞少々 by itself is not polite. The rest of the sentence usually makes it polite [...]
yea that's what I had in mind as well, as do the references

＞I don't know if it's in the editorial policy, but I've noticed that we don't rK kanji forms in this case. (see 時々, 様々, etc.)
True, thanks. But then 小々[rK]；小小[rK] doesn't work either. The difference here to the entries you mentioned is that there are two pairs of kanji forms.
Personally I'd hide 少少 and 小小, keep the noma forms visible and have 小々 as [rK].

少々　　　　 6,642,786  99.2% 
少少　　　　     3,329   0.0% I don't know if it's in the editorial policy, but I've noticed that we don't rK kanji forms in this case. (see 時々, 様々, etc.)
小々　　　　     6,719   0.1% -rK (daijs)
小小　　　　    11,489   0.2% -rK
しょうしょう    29,626   0.4%

少々 by itself is not polite. The rest of the sentence usually makes it polite as in: 少々お待ちください.

In the case of: 少々骨が折れた (gg5), it's not polite.

@@ -11,0 +12,3 @@
+</k_ele>
+<k_ele>
+<keb>小々</keb>
@@ -15,4 +17,0 @@
-<keb>小々</keb>
-<ke_inf>&sK;</ke_inf>
-</k_ele>
-<k_ele>
@@ -20 +19 @@
-<ke_inf>&sK;</ke_inf>
+<ke_inf>&rK;</ke_inf>

Google N-gram Corpus Counts
╭─ーーーーーー─┬───────────┬───────╮
│ 少々　　　　 │ 6.642.786 │ 99.2% │
│ 小小　　　　 │    11.489 │  0.2% │[rK]
│ 小々　　　　 │     6.719 │  0.1% │[sK]
│ 少少　　　　 │     3.329 │  0.0% │[sK]
│ しょうしょう │    29.626 │  0.4% │
╰─ーーーーーー─┴───────────┴───────╯

Meikyo:「ちょっと／少し／しばらく／少々お待ちください」では、「少々」、次いで「しばらく」が丁重。「ちょっと」はややぞんざいな感じ。

Shinsen:
㊀名数量・程度のすくないこと。「━の塩を入れます」
㊁副
  ❶すこしばかり。「━こまった」
  ❷しばらく。「━お待ちください」⇒しばらく参考。

Sankoku: 〔料理では、親指と人さし指でつまむ分量。☞ひとつまみ①〕


Top 10 collocations
╭─ーーーーーーーーー─┬───────────┬───────╮
│ 少々　　　　　　　 │ 6.642.346 │ 81.3% │
│ 少々の　　　　　　 │   351.389 │  4.3% │
│ 少々お待ち　　　　 │   272.036 │  3.3% │
│ 少々お　　　　　　 │   221.395 │  2.7% │
│ 少々お待ちください │   141.443 │  1.7% │
│ 少々を　　　　　　 │   111.878 │  1.4% │
│ 少々お時間　　　　 │   110.669 │  1.4% │
│ 少々不安　　　　　 │    84.261 │  1.0% │
│ 少々時間　　　　　 │    81.127 │  1.0% │
│ 少々お待ち下さい　 │    80.468 │  1.0% │
│ 少々・　　　　　　 │    68.928 │  0.8% │
╰─ーーーーーーーーー─┴───────────┴───────╯

This entry needs some work in general. Maybe this works?
少々お待ちください is a very common polite phrase, but none of my references state that しょうしょう is polite in general.
Though when thinking about it, I've only ever seen 少々 in polite phrases, never really ちょっと or 少し.
If it's applied, I would only put it on the time sense. Maybe a note would also help?
Perhaps someone else has an opinion on this?

@@ -11,0 +12 @@
+<ke_inf>&rK;</ke_inf>
@@ -14,0 +16 @@
+<ke_inf>&sK;</ke_inf>
@@ -17,0 +20 @@
+<ke_inf>&sK;</ke_inf>
@@ -28,2 +31,15 @@
-<gloss>just a minute</gloss>
-<gloss>small quantity</gloss>
+<gloss>a little</gloss>
+<gloss>a bit</gloss>
+<gloss>a small amount</gloss>
+<gloss>a few</gloss>
+<gloss>a pinch</gloss>
+<gloss>some</gloss>
+</sense>
+<sense>
+<pos>&adv;</pos>
+<pos>&n;</pos>
+<gloss>a little while</gloss>
+<gloss>a short time</gloss>
+<gloss>a moment</gloss>
+<gloss>a minute</gloss>
+<gloss>a second</gloss>

https://iikaeru.tech/chotto/#bu1

Shouldn't 少々 have the polite or a similar tag? I've only heard it in very polite situations, 2 natives confirmed this and reference

There's a significant overlap between poetic and archaic words. To make matters more confusing, the [arch] tag in JMdict is used both on archaic words that are still used in modern Japanese and archaic words that are obsolete. It seems sense 01 is the former and sense 02 is the latter.

@@ -15 +14,0 @@
-<misc>&arch;</misc>

smk, sankoku, iwakoku:
〔雅〕

gendai reikai:
「言葉(ことば)」「和歌」の古い言い方。

meikyo:
〔古風〕

[arch] applies for both senses.

@@ -15,0 +16 @@
+<misc>&poet;</misc>
@@ -20,0 +22 @@
+<misc>&arch;</misc>

https://kotobank.jp/word/へやぴん-623725#w-623725
https://kotobank.jp/jeword/ヘアピン#w-3221367

daijs, prog

adding second sense

@@ -13,0 +14,7 @@
+<sense>
+<pos>&n;</pos>
+<xref type="see" seq="1118220">ヘアピンカーブ</xref>
+<misc>&abbr;</misc>
+<gloss>hairpin curve</gloss>
+<gloss>hairpin turn</gloss>
+</sense>

Google N-gram Corpus Counts
╭─ーーーーーー─┬───────┬───────╮
│ お留守になっ │ 7,759 │ 79.0% │
│ お留守になる │ 2,067 │ 21.0% │
╰─ーーーーーー─┴───────┴───────╯

Not sure how needed this actually is.
The third sense on the るす entry already mentions it.

Aligning glosses

@@ -13 +13,5 @@
-<gloss>to fail to be attentive to</gloss>
+<xref type="see" seq="1552760">留守・3</xref>
+<xref type="see" seq="1552760">留守・3</xref>
+<xref type="see" seq="1552760">留守・3</xref>
+<gloss>to neglect (e.g. one's studies)</gloss>
+<gloss>to leave unattended</gloss>

Added additional PoS via batch update.Added additional PoS via batch update.
-*- via bulkupd.py -*-

@@ -12,0 +12,1 @@
+<pos>&v5r;</pos>

Entry created

sankoku:
｟副｠

meikyo 能う entry:
「あたう限り努力する」

@@ -19,0 +20 @@
+<pos>&adv;</pos>

Google N-gram Corpus Counts
╭─ーーーーーー─┬───────┬───────╮
│ 能う限り　　 │ 1,333 │ 56.8% │
│ あたう限り　 │   426 │ 18.2% │
│ 能ふ限り　　 │   228 │  9.7% │ - add, sK (old kana orthography)
│ あたうかぎり │   360 │ 15.3% │
╰─ーーーーーー─┴───────┴───────╯

@@ -9,0 +10,4 @@
+<k_ele>
+<keb>能ふ限り</keb>
+<ke_inf>&sK;</ke_inf>
+</k_ele>
@@ -16 +20 @@
-<xref type="see" seq="1340470">出来る限り・できるかぎり</xref>
+<xref type="see" seq="1340470">できる限り</xref>

GG5 has "tobira" as a gloss

Daijs, Daijr

Google N-gram Corpus Counts
╭─ーーー─┬───────┬───────╮
│ 海桐　 │ 1,323 │ 13.6% │
│ 海桐花 │   112 │  1.1% │
│ トベラ │ 6,732 │ 69.0% │
│ とべら │ 1,593 │ 16.3% │
╰─ーーー─┴───────┴───────╯

@@ -12 +12,2 @@
-<reb>とべら</reb>
+<reb>トベラ</reb>
+<re_nokanji/>
@@ -15,2 +16,2 @@
-<reb>トベラ</reb>
-<re_nokanji/>
+<reb>とべら</reb>
+<re_inf>&gikun;</re_inf>

海桐花   	112	1.1%
海桐     	1323	12.6%
トベラ   	6732	64.3%
とべら   	1593	15.2%
トベラの木	141	1.3%
扉の木   	434	4.1%
トビラノキ	108	1.0%
トビラの木	0	0.0%
とびらの木	25	0.2%
kokugos  eol

wiki and some online resources say 扉 is a valid kanji but it's not in any of thr kokugos, but several (koj etc.) use 扉の木 for the 別名 tobIranoki

before the typo searcher gets me again

@@ -36 +36 @@
-<gloss>cheefully</gloss>
+<gloss>cheerfully</gloss>

Thanks

Google N-gram Corpus Counts
╭─ーーーー─┬─────────┬───────╮
│ ほわほわ │ 106,698 │ 74.3% │
│ ホワホワ │  36,994 │ 25.7% │
╰─ーーーー─┴─────────┴───────╯

〈ほわほわ／ホワホワ〉〈と／した／する／な／の／に〉
╭─ーーーーーー─┬────────┬───────╮
│ ほわほわの　 │ 14,538 │ 30.1% │
│ ホワホワの　 │  6,474 │ 13.4% │
│ ほわほわした │  6,188 │ 12.8% │
│ ほわほわな　 │  6,184 │ 12.8% │
│ ほわほわと　 │  5,044 │ 10.4% │
│ ホワホワした │  2,565 │  5.3% │
│ ホワホワと　 │  2,452 │  5.1% │
│ ほわほわに　 │  1,509 │  3.1% │
│ ホワホワな　 │  1,434 │  3.0% │
│ ホワホワに　 │  1,144 │  2.4% │
│ ほわほわする │    569 │  1.2% │
│ ホワホワする │    213 │  0.4% │
╰─ーーーーーー─┴────────┴───────╯
＊ Meikyo: ［副ト・形動］やわらかく膨らんでいるさま。
　　　　　　 使い分け：「ふわふわ」より空気を多く含むさまをいう。

＊ https://ja.hinative.com/questions/21534715
「ほわほわは湯気、蒸気みたいなイメージですね」
「ふわふわは柔らかい物。ほわほわしたマシュマロでも良いですが、ふわふわなマシュマロの方がよく使います。」
「ほわほわした女性　＝　柔らかいイメージ・天然なイメージ」
「（ふわふわとほわほわは）少し違うけど、似た意味ではあります。」

＊ https://massif.la/ja/search?q=ほわほわ
Only 3 out of 100 examples use の, a third uses と and a quarter した. Generally though most are for [vs] (technically just [adv])

＊ https://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q11272914981
「かわいい、(顔でも雰囲気でも)やさしそう、にこやか、人に対して攻撃的でない、女の子に対して使うかも。」

＊ BCCWJ has 5 examples for ほわほわ, four of which are [adv(-to)]/[vs]. Three in CEJC, which are all [adv]


.

I think this is first and foremost an adverb, I only left the first sense adjectival for now since its so much easier to gloss. 
Perhaps subject to further improvement

@@ -6,0 +7,3 @@
+<r_ele>
+<reb>ホワホワ</reb>
+</r_ele>
@@ -8,2 +11,29 @@
-<pos>&n;</pos>
-<gloss>cf. ふわふわ</gloss>
+<pos>&adj-no;</pos>
+<pos>&adj-na;</pos>
+<pos>&adv-to;</pos>
+<pos>&adv;</pos>
+<pos>&vs;</pos>
+<pos>&vi;</pos>
+<xref type="see" seq="1113060">ふわふわ・2</xref>
+<misc>&on-mim;</misc>
+<gloss>billowy</gloss>
+<gloss>fluffy</gloss>
+<gloss>cloudlike</gloss>
+<gloss>puffy</gloss>
+<gloss>airy</gloss>
+</sense>
+<sense>
+<pos>&adv-to;</pos>
+<pos>&adv;</pos>
+<pos>&vs;</pos>
+<pos>&vi;</pos>
+<pos>&adj-no;</pos>
+<pos>&adj-na;</pos>
+<misc>&on-mim;</misc>
+<gloss>tenderly</gloss>
+<gloss>amiably</gloss>
+<gloss>softly</gloss>
+<gloss>cheefully</gloss>
+<gloss>gently</gloss>
+<gloss>pleasantly</gloss>
+<gloss>dreamily</gloss>

灰と幻想のグリムガル level. 1

「そうなんかなあ」とユメがほわほわした口調で言ったので、ハルヒロも「そうとは思えないよなあ」と軽く同調してみた。

https://hinative.com/questions/22348756
https://x.com/howahowanohowa

無政府共産主義	497

AB, but I guess its OK.

https://ja.wikipedia.org/wiki/無政府共産主義

Yes, hardly needed.

アメリカ製	147641	71.5%
米国製	58918	28.5%

Google N-gram Corpus Counts
╭─ーーー─┬────────┬───────╮
│ 韓国製 │ 85,695 │100.0% │
╰─ーーー─┴────────┴───────╯
Google N-gram Corpus Counts
╭─ーーー─┬────────┬───────╮
│ 英国製 │ 47,359 │100.0% │
╰─ーーー─┴────────┴───────╯

Google N-gram Corpus Counts
╭─ーーーーーーーーーーーー─┬────────┬───────╮
│ 米国製　　　　　　　　　 │ 58,918 │ 52.0% │
│ 米国製の　　　　　　　　 │ 15,356 │ 13.5% │
│ 米国製品　　　　　　　　 │  9,388 │  8.3% │
│ 米国製サプリメント　　　 │  7,021 │  6.2% │
│ 米国製品の　　　　　　　 │  3,956 │  3.5% │
│ 米国製サプリメントを　　 │  3,808 │  3.4% │
│ 米国製サプリメントを中心 │  3,692 │  3.3% │
│ 米国製品の購入　　　　　 │  2,833 │  2.5% │
│ 米国製品の購入を　　　　 │  2,813 │  2.5% │
│ 米国製品より　　　　　　 │  2,797 │  2.5% │
│ 米国製品よりも　　　　　 │  2,784 │  2.5% │
╰─ーーーーーーーーーーーー─┴────────┴───────╯
Probably more of an adj-no as well

.

Plain suffix usage, I don't think this is worth having.
I see we have 外国製, but that one's a bit different and also in references. 
Secondly we also have 中国製, which gets 10 times the this of this word, is in jitsuyou and a bit special in my eyes since "made in china" has become kind of a set phrase (it's often associated with 不良品 AFAIK).
And having 日本製 is self-explanatory.

Though I could see how this still sounds a bit arbitrary.

米国製	58918

Common. Not a freestanding noun.

@@ -11,2 +11,3 @@
-<pos>&n;</pos>
-<gloss>Made in America, Made in USA</gloss>
+<pos>&n-pref;</pos>
+<gloss>made in America</gloss>
+<gloss>made in the USA</gloss>

Yes, done.

https://www.softbank.jp/business/content/blog/202310/what-is-agi
AGI（汎用人工知能）とASI（人工超知能）とは？ 従来のAIとの違いも解説
https://business.nikkei.com/atcl/gen/19/00081/081900863/
ASIとは？　人間をしのぐAI「人工超知能」で加速する米中開発競争

ＡＳＩ should prob be an entry too

@@ -15,0 +16 @@
+<xref type="see" seq="2867264">人工超知能</xref>

See 2867264.

泡石けん	1123
あわ石けん	285 - Rakuten advertisement

@@ -8,0 +9,8 @@
+</k_ele>
+<k_ele>
+<keb>泡石けん</keb>
+<ke_inf>&sK;</ke_inf>
+</k_ele>
+<k_ele>
+<keb>あわ石けん</keb>
+<ke_inf>&sK;</ke_inf>

https://eow.alc.co.jp/search?q=foam+soap

泡石鹸	11434	61.4%
泡せっけん	7184	38.6%
Reading presumed