Here are the names
Pinkie Pie = Paulina Pettifer (two different individuals)
Rainbow Dash = Roxy Dodgers (different)
Applejack = Amelia Jems (different)
Rarity = Rowellina Beattie (different)
Fluttershy = Faith Summers (different)
Sunset Shimmer = Susan Shelby (same individual, with alias)
unnamed boy = Flash Sentry or Jock Fastflash (presumably only a human, no pony counterpart)