I found some adjectives ending in らしい seem to be the combination of "stem of
an adjective" and "らしい," e.g., かわいらしい, きたならしい, にくらしい, and いやらしい (there are
certainly more). What meaning does this kind of "らしい" alter an adjective
(assuming we can view the pairs this way)?

EDIT1

Let me try to explain my question in another way. When a girl makes up and
dresses up, would she ask everyone "どう、かわいい？" or "どう、かわいらしい?" (I bet the
latter one is unnatural). Or, someone writes
未練の残る元カレが結婚するらしい、そのウワサを聞き、なんとなくショックのよ、憎らしいよ。(憎い in this case is too intense
and doesn't fit well with former context なんとなくショック, I guess.) by using meaning
difference I intended to learn "使い分け" and "-y/-like" description doesn't help
me understand "使い分け" much.
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question
meaning compounds
Adjectives ending in らしい
From <https://www.japanesewithanime.com/2019/01/rashii.html>

可愛らしい vs. 可愛いらしい

An important thing to note is that when you have an _i_ -adjective the suffix
_rashii_ replaces the _-i_ ～い ending, but the auxiliary adjective _rashii_
does not replace the _-i_ ending.

Depending on whether the ending is replaced or not, the function of _rashii_
differs. When it's a suffix, it means something like "-ish" or "-ly". When
it's an auxiliary adjective, it's probably expression an assumption, something
that you heard from someone, etc.

For example:

  * _kawaii_ 可愛い  
Cute.

  * _kawaii rashii_ 可愛いらしい  
It seems that it's cute.  
I heard it's cute. (auxiliary adjective.)

  * _kawai-rashii_ 可愛らしい  
Cute-ish. Lovely. (suffix.)

Edit:

Actually after looking into it. The question is actually more interesting that
it seemed to be at first. らしい can have two meanings: "I heard/it seems" and
"-ly/-like". That doesn't change and everything that is usually explained in
textbooks is still true.

The meaning 1 "seems" is used when らしい is placed after a full clause, so after
a copula, conjugated verb or adjective with the い.

> 明日は台風が来るらしい。 It seems like a typhon is coming tomorrow.
>
> 月曜日は天気がよいらしいです。 It seems like the weather will be nice on Monday.
>
> だいぶ溜め込んだらしい。 He seems to have amassed a lot.

The meaning 2 "-y/-like" normally only attaches to nouns.

> 夏らしい夏。 A summer-y summer (a real summer, a summer that does what we expect
> from a summer)
>
> 男らしい。 Manly

可愛らしい is using the second meaning, but the thing is that we treat 可愛 like a
noun. We removed the い and it became a noun. But you can't do that with just
any adjective, actually only a small number of adjectives can do that.

For that reason, even though we can understand the meaning from the original
adjective, the compound adjective-stem + らしい is actually listed as a separate
entry in most dictionaries.

<https://www.weblio.jp/content/%E3%81%8B%E3%82%8F%E3%81%84%E3%82%89%E3%81%97%E3%81%84>

So even though the construction is very very similar to the noun + らしい grammar
point, you can also think about them as separate word entirely.

All examples sentences are from Weblio.
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answer