They can be from anywhere and identify as anything... if they have a Y chromosome and do the nasty with another Y chromosome, they’re homos.
One of the huge scandals of the mid 20th century is that the categorizations done by the Kinseys became normed. When the Kinseys themselves were wildly perverted and even cruel to children. I wouldn’t trust them to tell me about sex any more than I would trust an axe murderer to tell me about babysitting.
Technically the word as understood by classic psychology is “bisexual.”
The left has got us tied up in knots over mere language.