Interesting in this context is completely divorced from morally good/bad. Could be any group from any area at any time in history. I’ll start with a few, followers of the cult of pythagoras, contemporary black Hebrew Israelites, antiracist skinheads and the Amish (neo-luddites in general). Don’t be racist or a prick to other people discussing.
Uh, it’s very interesting if you’re into allegorical reinterpretations of universal deism and some esoteric rituals. But, yeah, the dinners are pretty much the highlight.