The vast majority of us are men. When in doubt, he/him pronouns are fine; the few exceptions are never going to be offended by a mistaken he/him.

Fronters who appreciate a good they/them:

• Sheridan
• Nuahada
• Hikaru
• Yiwen

The only person who uses non-standard pronouns is Hikaru, whose poison of choice is sa (sa/sa's/sa). We're not completely sure where sa got it from, but it might derive from the French son/sa/ses possessive (son livre, sa maison, etc.).