After playing the game a bit more, I definitely agree that the more "obscure" sexualities are much better as inclinations.
High friendship before sexual relationship happening more than a few times = considering they might be demisexual, and high friendship before romance = demiromantic consideration. Genderfluid could work here too, with the player even toggling if they are presenting more masc or fem.
Also, can trans NPCs PLEASE PLEASE PLEASE reveal to you that they're trans once you become friends with them? I don't want the opportunity to "reject" them, the player can just stop talking to them if they want, but there is the very harmful trope that trans people are trying to "trick" people and this game kind of does that by you not finding out if someone is trans until you hook up with them. A quick, casual conversation where the player is just like "Okay, thank you for telling me!" would go a long way!