I don't know more than 50% of who those people are.
It was this interlocking Heroic Age poster of all the Avengers teams by Marko Djurdjevic http://i.imgur.com/iH9Y7pt.jpg
Don't want to embed the image as it's huge.
and I'm shocked some of them where avengers.
Like Loki & Dr. Doom
also who is the red skull faced MiniHulk and the grey haired GrundyHulk with wings?