As far as chuubas go, off the top of my head Serena from V4Mirai can stay (even if she's a zoomer). Also our very own Slutpuppies should stay as well.Short provides useful archival services to the forum, so he's one of the good ones who is welcome to stay as a houseneighbour.
But specifically the Nigjis, Evanegros, etc. should never find welcome or respite outside of their own cultural vtubing/weeb ghetto.