Background Pony #341F
I’m favor of going with Sproutity. Seeing as it refers to Rarity as interpreted by Sprout, it makes sense and I for one have no clue what Rarity Jeong is a reference too.
I’m not sure about implying Evil Rarity or not, the Evil [INSERT CHARACTER] tags seem to mostly just get used in lieu of a more accurate tag for alternate versions of existing characters.