I would say only the Enclave and BoS have those traits. *shrugs*
I would say everyone is paranoid.
NCR wasn't so welcoming in FO2, and they fairly paranoid.
Boomers, Tribals, Vault Dwellers, all have the fear and paranoia. Seeing how there is very little diplomacy that goes on between these griups, it makes them all stink of fear. Why are Legion and NCR at war? NCR controls power, everyone wants it, Legion a group big enough to take it. But, anyone ever think of sharing? Not so much in post apoc.
I've always viewed it as pretty funny irony seeing how everyone complains about others being paranoid xenophobes, when in many ways, everyone is.
I think Jules in FONV explains it pretty good. One of my fav minor npc, too bad he wasn't developed more.