As a Brit female, I have to say that I find American accents very UNsexy, quite a turn off in fact.
“Midwestern”. Region name “the Midwest”.
I’m English and don’t find any American accent sexy.
(However there are a lot of good-looking American women!)
Only a tiny fraction of the folks living in CA have the kind of “Valley Girl” accent that I assume you are talking about. What-EV-errr!
It is fairly rare for people to consider Kentucky and Missouri in the Midwest. You can sometimes go west of the Mississippi and still be in the Midwest, but you can’t really cross the Ohio.