Why no one has mentioned the mighty Shorts ... SD3-60 ?
Cold in the winter, hot in the summer, no autopilot, under-powered, unpressurized, lousy seats, noisy cockpit, low pay ... what's not to like ?
I don't think anything with a jet should be considered regional, not at some of the stage lengths they do.
If I could make good money in a Dash 8, that would be my choice ...