Why not?
Based just on that map, I would consider Texas “West” and Missouri “Mid-West” and how in the hell did Delaware show up on that list?
If you are talking about The South, in general, I would have to say the rest of those states would pretty much fit in, but Florida seems to be a little more difficult…hard to think of a bunch of ex-Cubans and ex-NYC Jews in Miami being considered good ol’ boys, but then again, I have never been to Florida, so what do I know?
Just personal fuzzy logic here, based on nothing more than a few years living in Cincinnati:
I consider Cincinnati to be Midwest, but I think of Kentucky, even Northern Kentucky, as the South. There is an invisible force field running down the middle of the Ohio River which mostly keeps the two sides apart. Example: my wife is a physician who sees patients in both Northern Kentucky and Cincy. Among both groups of patients there is a real aversion to “Crossing The River”. My missus will tell a patient, “We’re better equipped to do that surgery at hospital X in Cincinnati”, and the patient will recoil in horror. “Oh,” the patient might say, “but I don’t want to Cross The River.” It’s not the Rubicon, for Pete’s sake. I’m only exaggerating a little. It’s not just that people don’t want to deal with traffic. It’s the invisible force field. People around here seem to perceive a real distinction between the Cincy side and the Kentucky side. Now, maybe it’s just an urban/rural divide, but if so it’s a lot stronger than any urban/rural divide I’ve seen in other cities.