Queen Twilight Sparkle and Queen Sunset Shimmer: adoptive mothers of Spike and Cozy Glow (in this AU Cozy is an orphan and they didn’t turned her into a statue), biological mothers of ??? (i still don’t know qvq)
 
Princess Rarity, lady Coco Pommel and lord Capper Dapperpaws: parents of Rum Laurel, Dolce Pinacolada, Dandy Lion, Charmer Glam, Donatella and ???
 
Princess Pinkie Pie and Princess Skystar: mothers of Polaris (pool) Party, Blue Lagoon Lemonade, Seafoam Bliss, Jelly Fishbowl and Bubble Piñata
 
Princess Applejack and Lady Knight Fleur de Lis: mothers of Dame Rose (Pink Lady), Peach Gloss, Reinette, Wintergreen Pomme and ??? (may add more)
 
Princess Rainbow Dash and Lady Vapor Trail: mothers of ??? (i still don’t know qvq)
 
Empress Cadence, Prince Shining Armor, Lord Sunburst and Princess Fluttershy: parents of ??? (i still don’t know qvq)