Interesting. I can detect accents, but I was born, raised and reside in AZ. I don’t think that I have an accent, but who knows?
I'd say the typical Anglo Californian accent, btw, would be former governor Pete Wilson.
Reagan never completely lost his downstate Illinois inflections.
Walk into a casino in Las Vegas & look for the oldest dealer in the place. Talk to them for about 5 minutes & then ask them to guess where you’re from. They’ll probably say you’re a local.
I’m born and raised in WV and I’ll never say I don’t have an accent. Heck, around here we can even tell what county strangers are from.