Though it'd be easy to assume John Wayne is the actor with the most Westerns under his belt, that distinction actually belongs to a different Hollywood legend. The Western genre is among the most iconic in the history of Hollywood. Actors like John Wayne and Clint Eastwood used Westerns to become two of the most famous movie stars in history. Westerns were an integral part of the film industry, and they were initially produced at an astounding rate, seemingly defining cinema for decades.

https://screenrant.com/tom-mix-hollywood-western-actor-most-movies/