Social identity branches out in all directions, like a fractal. You subdivide your traits and distinctions until a new set of niche descriptors satisfies your ever-growing urge for place. These are merely social shackles. They share the same genealogy that cis people share for the term 'heterosexual'. It's all a grift, a waste of your mental energy. You are self-ensnared by fictitious social-jargon, but it should mean nothing to you, truly. When one realizes that it can never end, that the fractal is truly infinite, you make an active choice to abandon the search for the bottom, lest risk drowning in its spiral. You could merely accept that you love yuri lesbians AND yaoi lesbians, that you love lesbians, that you love yaoi, it doesn't fucking matter. You simply love what you love.
Look at yourself in the mirror. is that a person who lives under the perfect categorical definition of any-one kind of person? You know it doesn't. So why do we believe these niche terms help define our role as human beings? Does it bring you comfort to have these self-appointed titles? Do you feel safe surrounded by people who call themselves the same things you do? Or is it merely a glass shield protecting you from a scary truth: that you can be anyone, and do anything? Having that much freedom is scary, but it also means you're never beholden to the restrictive nature of category ever again.