60
Socialism with Stellaris characteristics
(hexbear.net)
Tabletop, DnD, board games, and minecraft. Also Animal Crossing.
3rd International Volunteer Brigade (Hexbear gaming discord)
Rules
Xenophobia was always an ethics option, so I am not sure it is really much worse than "all other xenos should die" already was. Not a path I personally ever really pursued.
As long as I can still make my xenophile space-communists, I am pretty happy with my playthroughs.