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.
Rojava, an socialist autonomous region in northern Syria: https://en.wikipedia.org/wiki/Rojava_Revolution
And the Zapatistas, another successful socialist insurgency in mexico: https://en.wikipedia.org/wiki/Zapatista_Army_of_National_Liberation
Rojava coverage by famed bagel chucking weirdo Robert Evans.
Very interesting.