I mean, if we're listing out the gay (not bi) characters, we get a similar number. Rae, the nun whose name I can't remember off the top of my head, and maybe Yu (IDR if she ever expressed definite romantic or sexual interest towards anyone tbh, but the one I think was most likely candidate for her interest was Misha)...
Claire and Misha are the only confirmed bi characters, but there's no good reason to believe that anyone else isn't bi, except Rae and the aforementioned nun (who both said they're 100% gay), and I think a couple of the others were kinda put off by Rae's candidness about her sexuality - then again, Claire was too but we all know how that turned out.