New York is distinctly different from Boston, is distinctly different from Northern Maine, and very different from Pennsylvania. Then we've got southern drawl, white trash, we've got Minnesotian, midwest, east coast, west coast, western, Texan...

At least, as far as the accents that we put in movies and TV and media that we send abroad.

Plus the media also has one universal accent that covers all Indigenous Americans. Black actors get two extra accent options, "inner city" and "French immigrant".