Eastern US and New York accents: Brooklyn, Manhattan, Bronx, Long Island, New Jersey, Rural Upstate New York, Boston and others.
Southern and Midwestern US and urban accents: Deep South, Texas, Southwest, Chicago, Minnesota, and others.
Ethnicities and nationalities: African American, Hispanic American, Mexican, Puerto Rican, Cuban, Asian American, Chinese, Japanese, Korean, British, Irish, Scottish, Russian, French, Italian, German, Arabic, Indian, American Indian, Jamaican, Belizean, and many others.
Character Types: Urban, Rural, Upper Class, Middle Class, Working Class, Hip Hop, Gangster, Gangsta, Cholo, Hero, Comedic Sidekick, Villan, Cop, Criminal, Good Guys, Bad Guys, EVIL Guys, just to name just a few.