There’s no way to know this for sure. Though we have examples throughout history of some cultures being accepting of homosexual or transgender identities, it’s entirely possible that most prehistorical cultures were strictly heteronormative just as they were once we started recording history.
Go even further back, and nobody gave a shit if you were gay. Or were even considered weird for not doing gay stuff.
In fact, it generally wasn’t even a category. It was just a behavior
There’s no way to know this for sure. Though we have examples throughout history of some cultures being accepting of homosexual or transgender identities, it’s entirely possible that most prehistorical cultures were strictly heteronormative just as they were once we started recording history.