It is a stronger together thing and there's even ground level friction between the L&G&B&T's or so I've heard. Gay guys don't necessarily love trans women are march happily under the rainbow together just because they bloc together politically. And there are other letters. LGBTQI is as far as I've seen it go. Q meaning queer and I for intersex. I'm just curious like you but I've done some reading. Did you know agender is a thing? Like you really can't bother to pick? Gender fluid is another one I can't wrap my head around. I'm open minded but gender identity for young people makes me feel old and square.
That's because white / Christian cultures have made a deliberate effort to try and erase the existence of trans people. For example how being Hijra was declared as being illegal during the British Raj in India.
For example, in the Native American culture: https://en.wikipedia.org/wiki/Two-Spirit
LGBTQQIAA, if I remember correctly. QQ - queer, questioning; AA - one is for androgynous, pretty sure, don't know the other. That's the umbrella of alphabet soup my college "non-binary gender" club ascribed to, but if we want to be not worried about PC-ness, "gay club." think arguewithatree just pointed out the other a, agender.
I've never seen 2 A's used w/ androgynous as an option. There's debate about the other A being for asexual but a lot of asexuals have been showing their asses by appropriating terms like "compulsory heterosexuality" and "corrective rape" and using them to shame people who aren't asexual without acknowledging the specifically queer history behind them.
Agender is not about being "not bothered" to pick but feeling an absence of gender or nonidentification with a specific gender. To use the color metaphor, some people are red, some people are blue, some people are purple, etc. Black is the absence of color in the same way that agender is the absence of gender.