Oh, and the accent that most media figures traditionally were encouraged to use is what's referred to as a Transatlantic accent. It's not a regional accent, but a purposefully crafted 'neutral' one that was made so that speech would be clear for any English speaking audience.
I've heard that before too. Especially for news anchors.
My family is a riot of various accents.
Dad and his parents were native New Jersey. They always sounded "normal" to me.
Mom is from the Bronx, but moved to NJ at 18 and lost the Bronxian.
Mom's father sounded like Archie Bunker. Heavy cliche Bronx with some Brooklynese too. Sometimes I thought I was listening to a Bowery Boys film.
Mom's mother was from Scotland, came to the US at 9, and kept just a tiny hint of the Scots.
HER father was from Glasgow, and I couldn't understand a bloody word he said.

.
My sister, a pure Jersey Girl, Moved to South Carolina 20 years ago. She sounds like a native southerner now, though her accent isn't nearly as heavy as her oldest son, who basically grew up down there, and sounds like he was in deliverance!