Taima Caylie's an X-kid, but since Storm wasn't part of Utopia, they probably don't have the same connection, and she's 3 years younger than Taima so they wouldn't have really known each other well in school. Dean's a lot younger, but will know her as NA's admin assistant. Alex is her student this year. Ash doesn't know her, obvi. Eve is the same age, so they actually were seniors together! Plus the occasional holiday party growing up, I'm sure. Vic is a couple years older, but they're co-workers, and he totally still smokes pot with her on occasion (if that's still something she does - we said he did that with Obie sometimes). And Mike is much older and from a totally different group of X-men, but they're co-workers too. I doubt their personalities mesh well at all though, but he's also like badass black superbabies represent!
Regina Like Taima, Eve would've gone to school with her for senior year - assuming Regina didn't graduate early like her brother? But Eve probably does not like her, given her personality. They would've met the year Eve was rejecting the spotlight and she has no patience for bratty famous people. And given the details, I don't think any of my others really know her at all - at least not in person. Caylie, Vic, and Dean are friends with Luka, but if she rarely talks to him, it's unlikely they've met.