Raymond Holt (Brooklyn Nine-Nine): Instead of being a classic "gay black man" character, he's a very strict police captain with a desert-dry sense of humor and an occasional flair for drama when he wants to be petty. While his sexuality is sometimes incorporated into some gags or storylines, it's far from his domineering trait. Gustavo Fring (Breaking Bad): I haven't seen Breaking Bad so I can't quite say, but from what I've been told, Gus could basically be a straight guy and the story wouldn't change. I didn't even know there were gay Breaking Bad characters until this post. Undyne the Undying (Undertale/Deltarune): You don't actually realize Undyne is a lesbian unless you go for the more pacifistic option and watch her date Alphys. You could play undertale start to finish and never realize it, but the ship between the royal guard & royal scientist is one of the best in game.
Every character in BG3.
At least, I'm pretty sure it's possible to beat the game without fucking everyone so it's not plot critical. But it's, like, the hardest challenge.