What routing protocol do home routers use?

Could you please elaborate on the routing protocol typically utilized by home routers? It's an interesting topic that I'd like to understand better. Specifically, which protocol do they rely on to direct network traffic efficiently and effectively within the confines of a residential setting? Is it a standard protocol that's widely adopted, or are there multiple options depending on the router's manufacturer and capabilities? I'm curious to know more about the inner workings of home networking and how routers play a crucial role in making it all happen.