I probably don't have enough on em to do full bios but since I'm going in "game order" here are the main kids' moms (doing the Single Pokemon Moms song and dance here)
Penny and Nicole live in Alumen Town, Marie lives in Argent Town. Nicole had a past career as a competitive trainer in her youth before quitting abruptly, Marie is a bit of an overprotective smother and has dreams of being An Artiste but is stuck in one of the less-happening corners of the region and trying to raise a kid. I don't have much on Penny rn sorry (also yeah, same name as Penny Scarvi, oops. This has happened with naming OCs before and it will happen again.)