I like player races that don't typically have a concept of sex or gender. It's one of the fun things to play with that's just built in to warforged and leshy.
"So are you a boy or a girl?"
"...I'm a cactus."
Yea same. My last few characters have been some sort of gender fluid. My current one I put demiboy. But for the one before I put "what is gender?" As my gender and made it a whole thing about how they were a half elf who was lost/abandoned and raised in the mountains by all kinds of creatures and shapeless/genderless things and gender had never been a thing they considered or needed with their people.
And furthermore, since it was a human social construct that they didn't need to use until they entered more general society with more humans and they were skeptical of it because they were skeptical of human ideas. In general they are skeptical/suspicious of humanoids because the first time they really encountered humans was when a group of humanoids came into their mountains, killed a bunch of their people including their mentor/father figure and caused them to leave and "integrate" into general society to survive, and now they are stuck with all these weird concepts like money, property, and gender.
Ooh, I do this too! I like to throw a twist into my characters, just to make them different from me. That way they become less of a self-insert, and I get to explore a different life experience.
I also had my very patriarchal, xenophobic dwarven cleric go through a bisexual awakening after meeting some fit, hairless male monks. It was remarkable how normal it felt for him to have that dawning realization, even as he was already married (to a proper Dwarven woman). I was a much better ally after that campaign, especially when a new player joined us, who was bisexual.
For my one trans character, I asked my gender non-conforming friends for advice, so that I wouldn’t accidentally make an ignorant caricature.
Make your characters Ace! Or Pan! Taste the rainbow in your games, even if you’re limited to one or two colors IRL.
Exploring identities through roleplay is a valuable experience. I discovered I was bisexual because I made a gay mad scientist, and it turned out that didn't take much effort to stay in character.
That said I made an enby war survivor for a game about pilots and as a cis guy I have no idea what I'm doing. Thankfully nobody has seen any problem, including a trans friend, but I constantly feel like I'm about to fumble it.
I discovered I was bisexual because I made a gay mad scientist.
Ayyyyyy, part of the reason I found out I'm trans is through realising I enjoyed playing female characters moreso than men, and had an easier time doing it.
When I was recruiting for a game this summer, one of the questions I asked applicants was 'How do you feel about "politics" in games?'. I wanted to fish out who was going to throw a fit when they met a gay couple in-game. Or when other parts of the game weren't extremely traditional or reactionary.
I have an elven Barbarian whom I have been meaning to use in a campaign for a while now. tl;dw: His dad is an abusive racial supremacist who had very fixed ideas of how my Barbarian should be and act like, but could never live up to.
Just recently I realized that he could be very easily interpreted as a trans allegory, and decided to go the extra mile. So now he's a trans man.
According to official Eberron lore, gender is just another aspect of themselves to change and morph around, which I interpret to mean that most of em are pangender or gender apathetic, or something else along those lines.