FRIENDS OF THE JUSTICE LEAGUE
The Atom, (he retired from being a full-time super-hero when he quit the Justice League), The Justice Society (difficult to contact because they live on another world), and The Teen Titans (they are part-time super-heroes).
4 HONORARY MEMBERS:
These are other super-heroes who have worked with the Justice League in the past but who have no official relationship with them.
Most of the super-heroes in the world are in this category. Most of them are more than willing to help out the Justice League when asked, but are difficult to contact on a regular basis or who do not have the time to join the group officially. Two good examples of this are Black Lightning and Nightshade.