hmmm I feel like Jesse would be into it just because Jesse is into everything. Hanzo would be into it if he was being slutshamed afterwards.
Genji would be into it because he’s p hard into himself and is like ‘of course you can have a piece of me while I’m asleep, I’m p hot’
I think Reinhardt would be into it in that he would have nothing against it. He is a very heavy sleeper and if he woke up to someone playing with his dick/just being finished playing with his dick he’d be like ‘oh… haha ok that’s cool :)’