rogue's gallery vs ingroup

rogue's gallery and ingroup both are nouns.

Word	Noun	Adjective	Verb	Adverb
rogue's gallery	Yes	No	No	No
ingroup	Yes	No	No	No

As nouns, ingroup is a hypernym of rogue's gallery; that is, ingroup is a word with a broader meaning than rogue's gallery:

Other hypernyms of rogue's gallery include camp, clique, coterie, inner circle, pack.

rogue's gallery (noun)	ingroup (noun)
a collection of pictures of criminals	an exclusive circle of people with a common purpose
a coterie of undesirable people