You have canon people like Hulking, The Asgardian, Hulk, Thor, Superman, Spider-Woman, New Carol Danvers, Firestorm, Kyle Gayner, Iceman, Nu Alan Scott, Ultimate Colossus
You have suspects like a couple Robins, Chinese Hulk, Martian Manhunter
I'm pretty sure there was a gay robot too somewhere down the line. That's like perfectly engineered to be gay if so.