Reading about Shinto I fell upon 3 different terms describing types of Kami.

Chinjugami are tutelary kamis for a specific region, area or location.
Ujigami are kamis worshipped by a family or clan.
Ubusunagami are kamis based on where you were born. Even if you move somewhere else, you will still have the ubusunagami kami of your birthplace.

Because of various factors, these 3 categories started to merge early on. Clans who moved to a certain location would adopt the local chinjugami as their ujigami. And because people began to become more sedentary, the chinjugami and ubusunagami began to merge too.

Obviously the situation is far more complex, just from the sources I have linked.