Adding my anecdote to this, I had an interesting experience when my kid did some voice over work for a couple of studios in Bangkok. I grew up in southern Calif

Adding my anecdote to this, I had an interesting experience when my kid did some voice over work for a couple of studios in Bangkok. I grew up in southern California and apparently have that West Coast or news broadcaster accent, which my kid has picked up. And that's what the studios wanted. One was for a Singapore TV kid's show where one of the main actors spoke English with what I guess you would call a Singapore accent. The producer wanted to replace that. Another was a cartoon for Indonesian TV. In both cases they wanted the "neutral American accent".