The Descendants series. The setting is basically as I described, except of course that the ghetto is heavily romanticized and the squalor mostly amounts to people having a vaguely punk aesthetic (as opposed to the preppy good guy kingdom). They’re Disney movies for kids, after all, but they do acknowledge that their own setting is fucked up.

The premise of the story is that someone realizes that the villains had kids in there and that punishing the kids for their parents’ misdeeds might possibly be kind of cruel so a few of them are selected to attend school in the good guy kingdom as an experiment. This results in a lot of choreographed song and dance routines, a romance plot, and some semi-self aware criticism of the “villains get punished harshly, heroes live happily ever after” trope.

The first one was pretty decent, the sequels were okay even if they effectively sidelined three of the four protagonists. They also made an animated series, which was a complete dumpster fire.