True favored race of Cazic-Thule?

[Psionide]

Now I personally believe the Trolls were the favored race of CT until they must have did something to lose that favor given they were defeated and driven out of their ancestral homeland by the filthy frogs. However, there are a couple other races that were created by CT that claim to hold his highest favor. Is it the slimy lizard men that make Cazic Thule their home? Is it the universally hated Iksar?

Thoughts?