Regular common names. For example, Lurline sounds Southern as well as
Darlene.
Emma sounds like a name you could hear anymore. Being American, the names I usually hear are American and the other ones aren't. I would expect to hear
Lily,
Mia,
Emma,
Sophia,
Hannah and
John,
David,
Elijah, even, those names sound American as in names in the US.
There is maps like this but they hardly show anything.
https://img.huffingtonpost.com/asset/5b5002281900002a00c66a2d.jpeg?ops=scalefit_720_noupscale
"Wanting to be someone else is a waste of the person you are." -
Kurt Cobain