Heloise = Rarity (Same voice actress)
Jimmy = Twilight (the star of the show, started out as the same race as the Tabitha character, and was called a(n even number)-shoes), + Rainbow Dash (combined the words “awesome” and “amazing” together) + Applejack (blonde and offered the Tabitha character to shake their hand with spit on it) + Pinkie Pie (has a “to many” episode and has been mouthless (though when Jimmy was mouthless it was brief and had nothing to do with the plot)) + Fluttershy (the “cutie” according to TV tropes)
And I might as well throw Spike into the equation since they’re both the male lead and the Tabitha characters most common love interest.