Ashleigh Ball (Talia), Tabitha St. Germain (Arianna), and Kelly Sheridan (Praxina) have all appeared on My Little Pony: Friendship Is Magic (2010-2019) as Rainbow Dash (Ashleigh), Rarity (Tabitha), and Starlight Glimmer (Kelly) respectively.
The LoliRock often sound like they have New York accents when singing, but they don't have them when speaking.