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]
(..) you're gonna invade Poland? You got quite the family tree. That maggot uncle of yours... ...Tommy Costigan, is another goof. He gets busted selling guns... ...to federal officers, among many, many, many other departures... - ... from our normative behavior. - And what's this got to do with me? (..)2006 The Departed