In my immediate area Pitties and bullies of all sorts. Sooo many pits. American bulldogs and now cane corsos are getting popular too. I've even seen a few mastiffs.
Shih tzus are pretty popular too, funny enough. And Heinz 57
other than that, it's pretty random. The local dog pound finds pits and mixes , labs and mixes, JRTs and their mixes, a few beagles, and then a little bit of everything. Other than some GSDs, I never see herding breeds like BCs or Shelties or anything like that around here. No doodles. Maybe a few puggles here and there and chihuahuas.