Before HRT - Primarily unsure, leaning on Bi or Pansexual, had a sexual interest in mostly women and a little bit for men, had a kind of appreciation for the male anatomy, and had sexual fantasy interest in both.
After only 2 months of HRT - Complete lesbian, can't fathom a relationship with a man in neither a romantic or sexual way. I am not above appreciating a man's body for its physique, but it does nothing for me in any aspect. Love women eternally, both sexually and emotionally and romantically. However, more romantically and emotionally now than before, before it was about 80% sexually and 10% Emotional/romantically. Now I barely think about the sexual aspect and just appreciate the entirety of the female species. Another thing I've noticed is that back in my male days I would look at lesbian couples and react/feel unlike the common male response (sexually aroused and curious about what they do behind closed doors), instead I felt envious because their relationships seemed so... adorable. I had this desire to be in a relationship with a woman AS another woman, despite being a male and not knowing anything about trans-related anything.
So i guess in a way I've always been a lesbian and just started to dabble in other aspects in my male denial, and after hormones kinda "regulated" my system out, I came out 100% attracted to women.
Also; an interesting development - all the things that use to turn me on (kinks, fantasies, role play situations) literally RESET like a new computer, I no longer feel turned on by the same things and it feels as though I'm rediscovering my sexuality all over again. Its maybe a quarter dismaying but 3/4ths exciting

like going through puberty again and trying all those crazy sexy things for the first time again xD
I use to be afraid that i would lose interest in my wife and become attracted to men (didn't want to experience the guilt of leaving her because i lost attraction.) but now our relationship is even BETTER than it ever was when I was male (even though my wife doesn't identify as lesbian) because we're more intimate and more loving towards each other, and sex is such an intense experience xD
Sorry, i get excited talking about the sexuality changes of HRT lol Another interesting discovery is that while before I would only look for sexual attraction in others, now when i look at people and admire their beauty, its in a different way, almost like I admire things that wouldn't be considered sexually driven. Like a person's hair or their skin color, or the way their calves are shaped lol, it doesn't arouse me as much as it just makes me appreciate it... I don't really know how to properly explain it

my wife and other girl friends just tell me "now you know what its like to be a girl and not think with your d**k".
love it. never really "thought with my D**k" to begin with, but still