AGP = autogynophilia: the idea that a person is a trans woman due to a sexual interest in having a vagina

HSTS = Homosexual Transexual: the idea that a person is a trans woman due to being a homosexual male, in other words that they are transitioning in order to have sex with straight men

Trutrans sounds like it just means "valid" as in they will claim a lot of trans women aren't trans women unless they are trutrans. Also, it may be those who insist that some are not actually trans because they say they don't experience gender dysphoria or because they don't want general surgery.

All of which are old, unsupported, and frankly regressive ideas.