In Western PA, we call them subs.
Although, nobody eats subs around here. This is the sandwich of choice:

I lived in Pittsburgh for 8 years and never heard anyone refer to it as a sub. All hoagies. Fish hoagies, steak hoagies, chicken hoagies. And Primanti Sandwiches, of course. But I like them from Tom's Diner on a hoagie roll... the steak, slaw, tomatoes, fries and provolone. Mmmmmm...
In Baltimore, they're subs and they suck compared to the hoagies in Pittsburgh except here you can get "hots" on your sub instead of just hot banana peppers.