Usually when people talk about egregores, I think they mostly have ideologies in mind.

There's a somewhat "lower-level" egregore (in the sense of a low-level language, not a low-level demon), that I think is pretty overlooked, that I think of as "emotional cynicism" (to distinguish it as specifically the emotional stance we associate with the word "cynical", and from capital-c Greek Cynicism).

Emotional cynicism seems to me to be near totally dominant in public online discourse, and I think that's both interesting and somewhat concerning.