So as part of a Work in Project that Matt Ryan and I are working on, here is every clan in central Sartar and its approximate borders. The map is a composite of over a dozen drawings from me, so it is imprecise and needs plenty of tweaking. But it is fascinating and an incredible source of ideas for me. Also it shows how much these clans actually have to intersect and interact. And how much they vary in size and claims.
One thing that is worth mentioning is that there are several different clans with the same name. There are at least two Wildcat clan, and several Owl Clans. In some cases that might point to a common origin, and in at least one set of Owl Clans it is just that Horned Owls are mighty spirits!
Some of the highest population clans (e.g. the Ernaldoring) have some of the smallest territories while some clans with relatively few members (the Daldori) have much bigger territories. That reflects the quality and wealth of the land or the importance of its location.
All of them likely have more than one name. What is listed is just what I know them by.