I'm still waiting to find out who the lesbians are. I don't think there is a single lesbian in this. Just a few that are happy to fool around.
I don't even think Jaye & Tara are BI. IIRC, Tara specifically says she's not into Jaye, she's just helping out a friend. I thought Jaye said something similar somewhere. But, I haven't played the latest Jaye/Tara stuff yet (Team Mallory), so there might be something in that I'm unaware of.
Mallory is not bi, but there is a path you can play where she starts to explore it.
Amanda has no idea what she is. She is still trying to figure herself out.
And I can't think of any other SG or character that has shown lesbian or Bi tendencies (Bianca, Lisa, Fiona, Erica, Linda, Tanaka, Sophie, Kaili).