I spent the better part of my 20’s traveling all over America. During those years my bases of operation were either the suburbs of NW North Carolina or the trailer parks of NE Ohio.
I heard plenty of southern affectation in the trailer parks just south of Cleveland. For reference, Cleveland is across the lake from Canada. There’s no reason ANYONE in Ohio should have such an accent short of their own moving from south of the Mason Dixon. That said, there’s more America below the Mason Dixon than above.