A majority. From our world: I'm here, Nat's here, Wanda, Steve, two versions of Bucky, Stark, Banner, Thor, not sure if he's official or not but King Catman T'Challa. Other reality Avenger types include two different Sam Wilsons (one's Captain America and can talk to birds), a younger Bucky...
I don't even know anymore come to think of it... There's a hell of a lot of us though. Oh, and there's another version of me around. Apparently those from his world are stunned at how well my life is put together considering I got a family.