I’m going to assume you meant strategist or strategy.
In terms of general strategic play I would suggest the two you have already mentioned: Psychokino and Centurion but also Dievbirby or some form of Bokor or Hunter assuming there will be more micromanagement of minions once the game develops more.
In terms of control any form of wizard is able to get sleep, but wizard control seems to progressively get better further in the ranks, with soft control options in Cryomancer as well as harder options in elementalist stone form/freeze, thaumaturge size control linker pulls/binds and chronomancer slow/stop.
Please take this with a grain of salt as I have not participated in kcbt or icbt1 but I more or less have all of the class skills memorized.