Cheyne/Danny: custom stuff that needs to be revamped, Spheres: Forces/Prime/Mind
Angela/Light: Uncrowned kings with the akishic brotherhood, Spheres: Death/Matter/Mind
Paul/Dark: Brotherhood of the Demon Wind Akishic Brotherhood, Spheres: Space/Time/Mind
Steven/Ezra: The Pygmalian Society w/Cult of Ecstasy, Spheres: Fate/Mind/Time
Adam/Gordon: (legacy), Spheres: Spirit/Life/Prime
Temple: Storm Keeper w/ the Verbina, Spheres: Time/Fate/Forces
Gideon/Dartsmoth: Neocologist w/ Dreamspeakers, Spheres: Spirit/Life, Gideon gets an extra discount on spirit sphere buying, and a mystery bonus or Matter as a 3rd primary sphere. It is more likely he will take the 1st package.
If any of this changes let me know because your mentors will be part of upcoming plot.