Ok here goes:
Red John has:
Brett Partridge: A lab geek like dexter, but covers up any identity traces RJ may have left at the scene
Ray haffner: A CBI agent and probably old friend from when RJ was with visualize
Brett Stiles: A cult leader, but RJ has something over his or Visualizes head or just loyalty to his former member. (But I believe Visualize does a lot of the dirty work for Red John...Stile's help with Lorelie is proof of this power)
FBI Agent Reed: an/the FBI informant
Sheriff McAlister: Local Law Enforcement (probably in the same area where RJ actually lives)
Gale Bertram: Friend of RJ
and the one who controls the strings is Robert "Bob" Kirkland aka Red John
All 7 are guilty of crimes big and small...I guess next season will be the elimination of all these guys. So it looks like we will have 7 episodes that will eliminate 5 and the finale will come down to 2...either Bertram or Kirkland...maybe..just a guess.