The Midland for me. Hm. I didn't know that.
Whatsisname, the Father of My Children, has the most perfectly accentless speech I ever heard. It could have something to do with the fact that he spent some time in broadcasting school back in the day, where any accent from anywhere was drummed right out of the students. It didn't matter where he worked...Upper Peninsula, West Virginia, New Mexico, nobody ever guessed where he was from.
For me, nobody ever said I sounded like a Yooper; mostly people would say I sounded like I was either from Canada or Virginia. My mother corrected us whenever we spoke "Yooper" because she hated the sound. Canada? Well, there are those who call the UP "South Canada". Maybe I learned that from my grandparents, who emigrated from Canada. But Virginians? They say things like "hoose" for "house" and "aboot" for "about". Mother would have raised Cain if I'd done that.