Council of Super Heroes
Communicative group that includes representatives from major superhero teams or at least teams that generally engage in super-heroics (X-men, Atlantis, Etc). Allows for the sharing of information and collaboration in joint operations.
Not a ruling body though as the groups still remain separate and have their own leadership structures.
May also include representatives from other countries (Atlantis) and entities (Green Lantern/Nova Corp) that may have some input.