Alternate universe where pony Sunset is an alicorn princess and pony Twilight is a reformed villain (so, that means that pony!Sunset and pony!Twi have switched roles), human Sunset goes to Crystal Prep and the rest of human Mane6 are her teammates and “friends” and pony Twilight in EqG world goes to Canterlot High and Indigo, Lemon, Sugarcoat, Sour Sweet and Sunny are her friends.
 
Principal Cinch is Granny Smith’s counterpart. Original idea of Cinch as Granny Smith’s counterpart was from SunsetShimmer333
 
Granny Cinch is Sugarcoat’s grandmother.  
Principal Smith is headmistress of Crystal Prep Academy and the main antagonist of EqG:FG.