I like them as ones known/spoken of as "neat actual things," and as abstractions of things not usually considered tribes, e.g.Trumpers, GOPers, peacenicks, taxpayers, the rich, the poor, etc., etc.
And best for imaginary things that might be perhapsably so enuf, e.g. Autistics, not-Autistics, Aspie-naughts, ND,'s, NT's, etc., etc.