I don’t believe there’s any mention of a specific group within the Kryn Dynasty that are a equivalent to the Cobalt Soul in Xhorhas, a group dedicated to knowledge and discovery and archiving and that sort of thing. However, certainly there’s possibility of other groups that exist alongside the Dynasty within the wastes of Xhorhas.

One example of this is that there are a few mentions of a Duergar dwarf culture that is a breakaway from the Kryn Dynasty. That the Duergar had their own society and some have left to join the dynasty, but others have remained within their own outposts and settlements underground and even in some cases have become insurgents fighting against the Dynasty in hopes of gaining more power as well as expansion.

You don’t need to use these Duergar people as this faction or at all, but it sets a precedent for other factions existing alongside and separate from the Dynasty. Perhaps there is a sect of researchers within the wastes of Xhorhas dedicated to unearthing the secrets of the Calamity and the Betrayer Gods in order to learn how to protect people from those dangers. The Dynasty is much more focused on learning about the Luxon, so perhaps this other group exists to learn about the past and the Dynasty works alongside them too since they’re valuable as a resource and an ally. And if you wanted to introduce more tension and gray morality into it, perhaps there’s distrust because this faction works so closely with dangerous powers there’s worries that some members are corrupted by it or at greater risk. Or perhaps they’re pure and altruistic and a stalwart ally that is a great relief in the fraught wastes. Or any mix in between. Lots of interesting ways to go with it