I’m between Knoxville and Chattanooga in the foothills of the Smokies. What Southern dialect am I? I don’t have the “country” accent even though I live in a rural area but I know the accent you are talking about. My grandmother and grandmother had that. I don’t like bad grammar regardless of where a person lives but people from my grandparents generation in rural TN normally made it through 8th grade because they spent most of their time being farm hands.
I think just listening a lot from West Virginia to Roanoke to Roan mountain North Carolina to northeast Alabama and blue ridge Georgia
It’s Elizabethan origin throughout Appalachia
The tones and whatnot
Compare Irish Scots and English Midlands traditional music to what we used to call county music 1950s and 60s
My folks are east Mississippi piney woods who speak country with double negatives and all that entails
My dad’s people were black belt land owners and merchants Columbus Miss area folks and they speak more Deep South Southern like Diane Ladd or Andie McDowell