>>106859518Futa is about 50% gay, or Bi if you want to split hairs. Yes, you're looking for women with dicks, but both of those are important parts of the equation, and if you took the woman out, it presumably wouldn't be hot.
Shemale, however, is basically a dude with tits. You're specifically looking for a dude with tits that you can't fuck in the pussy. While the tits make it a little bit straight, the lack of a vagina brings that up only to about 25% straight, which we round down to gay.
Traps, of course, are completely gay. They have no tits; which isn't gay in of itself, but the appeal of the trap is the feminine allure despite being a man, hence the name "Trap". you only find out it's a boy when it's too late. However, most people who seek out traps do so not because they are fooled by the trap's disguise, but because they see through it. They know he's a boy, and that turns them on; hence the 100% gayness traps are known for.
>>106859557Based