Ultimate Runaways/Young Ultimates
So, I'm just thinking, right? Conceptually, if you boil them down, the 616 Runaways as a concept i.e. the children of supervillains escaping and trying to stop their parents and build a life for themselves. That fits perfectly within the themes of Earth-6160. You just need to replace The Pride with The Maker's Council and pick and choose which members have kids. So here are my top picks:
Skar: Son of Bruce Banner. Grew up in K'un L'un. Drank the Kool-Aid hard on the Children of Eternal Light's propaganda only to become disillusioned once he learned of what his father did to She-Hulk's island. Tough kid with a heart of gold and a mellow personality, polar opposite of his 616 self.
Aimi Yoshida (Alternatively, Shin Harada II, The Silver Samurai's Son): Massive reach here, but I saw the X-Men Destiny post and couldn't help myself. I genuinely believe Deniz Camp would be willing to make an obscure reference like that given the other references we've seen and I think having a child of Sunfire in Hi No Kuni would actually make a ton of sense and work really well for a story like this.
Sunspot: Probably the one with the biggest reason to run away. His dad is literally using blood transfusions from him to give himself superpowers and leaving him a sickly wreck in the process. He doesn't need to become disillusioned, he already knows how bad it is. He's seen it firsthand, he just needs to grow a spine and leave.
One of the Omega Clan: I think having one of Omega Red's kids go turncoat and join this resistance movement would actually be kind of fitting. Maybe they grew to sympathize with The Opposition back in the Eurasian Republic, maybe they just realized their dad is a sociopath, regardless they had enough and decided to fight for something better.
Richard Fisk: The Kingpin's son. He grew up with the Mob. He's lived with a target on his back his entire life. He's been aware of how powerful and how evil his father was for years. But knowing isn't the same as seeing, and seeing it was what drove him over the edge and sent him seeking something better. I think it would be cool to have him take on a persona akin to the Prowler. I could easily see him being similar to the Alex Wilder or Chase Stein of the group.
Kid Britain: Maybe as an inversion of the original from the Avengers Arena event, have a version of Kid Britain that actually comes to understand the role and the meaning of confidence over arrogance rather than simply having remain an arrogant, meatheaded douche all the way until his death. Someone who could actually oppose and hopefully replace Henri Duggary once everything calms down.