I'm bored and sick and depressed, so here are my Agent Carter sexuality headcanons. I just started rewatching the show again. Happy Pride!
Peggy Carter - Bisexual. Had the first on-screen queer kiss in the MCU. Basically confirmed by Hayley Atwell
Angie Martinelli - Lesbian. She's also in love with Peggy (aren't we all).
Howard Stark - Bisexual. He definitely loved Steve. My evidence is when he tells Peggy, "I know what Steve meant to you because I know what he meant to me" or something along those lines. Peggy was in love with Steve, so yeah.
Jack Thompson - Gay. And maybe also asexual. He is my go-to answer for the question "What's something that feels both gay & homophobic"
Edwin Jarvis - Straight, but he's an ally. Bi wife energy
Dottie Underwoods - Lesbian and if you disagree, you're wrong. She was also definitely in love with Peggy. I'm a Carterinelliwood (Dottie/Peggy/Angie) shipper until the day I die.