The property was divided equally 'among' the four survivors. [=each of the four survivors received an equal share of the property]
As a director, he encourages collaboration and considers himself only (the) 'first among equals'.
The brothers are always quarreling 'among themselves'. [=are always quarreling with each other]
(..) But there is grace in their failings. I think you missed that. They're doomed. Yes. But a thing isn't beautiful because it lasts. It's a privilege to be among them. You're unbearably naive. Well, I was born yesterday. (chatter) Say hi to Auntie Nat. (..)2015 Avengers: Age of Ultron