For those interested, American ebonics (black accents) also apparently have variations, though they seem a bit less distinctive:
https://www.youtube.com/watch?v=YMS70m-OzXoI've seen a lot of blacks in YT comments sections for The Wire clips say that Balitmore ebonics is more distinctive than other areas.
https://www.youtube.com/watch?v=JDpvkwBBu6U