Alright! The main one is Prophetic Wish, pictured below. She's the daughter of Twilight and Rainbow, and her talent is using magic to help others! She's a runt due to being born a little early, so Twi was kinda overprotective when she was younger, which kinda put a strain on their relationship. She definitely is closer to Rainbow, due to being treated less like she was made of glass when she was around her as opposed to Twilight.
Others are including but not limited to:
Firework, who's a Twilight/Sunset kid from my other NG universe, since I have 2
Lovely Charm and Shooting Star, twin Shiningdance kids and Flurry's younger siblings
Papillon, the daughter of Luna and Chrysalis
And various others but those are the ones I remember off the top of my head.