Hera+Kanan
I've flown a lot of people's ships and been on more. It's hard to imagine you on one and not owning it, body and soul. Besides the one they have, I doubt they'd be too friendly about us keeping any we happen to get our hands on either. It's why I'm there too. We need eyes on the only means off this planet.
There's two of him, actually. Are you wanting to feel them out, or are you wanting to find a team we'd make our own, a new Avengers team? For talking with people, well, there are six of them here who were there in the Battle of New York. I imagine there's merits to talking with each of them. I haven't learned what is up with all the other versions, since that information isn't freely available here. As for joining, I don't know their hierarchy.