So we've already talked about Margot. As for the rest of mine!
Amanda Campbell is currently dating bb bro Shay! Before that they were BFFs (or more accurately she didn't realize he was into her). So Manda would know her really well. She thinks of the Khans as a second family. She's also a gamer herself, so she'll love it whenever Mahira shows her geeky side.
This one's a bit of a stretch, but Fiona Clarkson is around the same age and is the sister of the guy running the Zoo. So idk, maybe there's some way they can cross paths?
It's late and I can't math right now. Wyatt would have been either the same year as her, or the year behind her. He was at Aurelius, but there might have been some overlap at school functions. We could totally do an old friend backstory for them if we want overlap with Mal/Zoe. Or we could just have them starting to get to know each other now! Do you have a preference?
The rest of mine are pretty friendly and may have random run-ins here and there.