Here is another one of the newest First Ones to the NeoExodus: A House Divided setting. The Kobura are a subrace from the race of Sobeka, Like the Kroca. Read more about them here:
The smallest of the First Ones, Kobura are a subrace of Sobeka bred for scouting and foraging. These small snakemen range ahead of every First One army, preparing the ground for more powerful creatures and assisting them via ambushes and surprise attacks. Outside of First One service, Kobura are nomadic predators, less organized but hardly less dangerous than their soldierly brethren. Kobura have been bred for subservience for countless centuries - indeed, their race may have been magically created to serve the Khaynites. While this manifests itself as stolid obedience in the Kroca, in the Kobura it leads to obsequiousness. Unlike humanoid servants whose fawning is often directly proportionate to their disloyalty, most Kobura genuinely mean the compliments they heap upon their masters.