Well, there's straight, gay and bi, but also heteroromantic, homoromantic, and biromantic. As well as:
Asexual
Grey-A (people who either has a very low sex drive, or can only feel it in very specific situations, or feels it but doesn't wish to act on it)
Demisexual (someone who is only interested in having intercourse with someone if they have a strong emotional bond with them)
Pansexual (sometimes also called omnisexuality. They feel attraction towards people regardless of gender and do not see gender as important)
Polysexuality (people who identify as polysexual are attracted to more than one gender, but do not wish to be called bi because they think that implies there are only two genders)
Aromantic (which means they feel little or no romantic interest in others, not the same as asexuality)
Gray-romantic
Demiromantic
Panromantic
Polyromantic
There's also something called metrosexual, but that's a lifestyle, not a sexual orientation.
Quote:
Does it matter how people are super-specifically grouped?
I think so. It defines you and is part of your identity.
I don't think it leads to more biases, people don't need a name for what they react negatively to. Me, I like categorizing in super-specifically groups a lot! I wish AS had a lot of categories too, but that's OT.