My kids are super excited for Storybook Dining... maybe a little gimmicky, but the items sound so fun! And it sounds like mostly kids can get same/similar to adults in terms of appetizers and desserts.
We also made a reservation for Skippers Canteen, Biergarten & Boma and plan to do Satuli Canteen, Ronto Roasters for the wraps and maybe Woody's Lunchbox- seems like the food there is still pretty middle of the road but at least a little more interesting. Nomad Lounge has some fun looking items though obviously not kids menu specifically. They've also expressed interest in the Blue/Green Milk at Galaxy's Edge- nor sure how sugary they are but at least they're supposedly plant-based.
Excited to hear what others suggest here too- our kids like spice/flavor and don't like bland food so "kid food" like nuggets/grilled cheese/etc usually don't appeal... I think we'll be having them split adult meals at least some of the time.