Memetic tribes
Update: Looks like this was authored by the Intellectual Explorers Club (a).
I'm not sure who assembled this spreadsheet; it's pretty mind-blowing. Here's a .xlsx version, in case the original disappears.
Warning: You may see groups near-and-dear listed alongside groups you view with only disgust & vitriol. I found it helpful to read the sheet as if I were reading Wikipedia, i.e. as a noncombatant repository of knowledge.