Hi. Chiming in as a parent myself, with some suggestions that I would have let my kids watch at that age:
- Mitsuboshi Colors - Good, clean fun childhood adventures of 3 young girls.
- Strawberry Marshmallow - Same as above, but heavier on the comedy side.
- Cells at Work! - Educational about how the body works, though there is some fighting and battle shounen tropes.
- Flying Witch - magical slice of life that instills a sense of wonder.
- Keep Your Hands Off Eizouken! - 3 creative high-schoolers are fighting to keep their animation club. This is the one to watch if your kid has even the slightest interest in art.
- Sleepy Princess in the Demon Castle - a heartwarming comedy that humanizes monsters as super friendly. Might be a good watch if she's afraid of monsters. Even a good watch if she's not.
I personally rate each one of them very highly, but I'm not sure whether they have dubbed versions or how good they are.
Lastly, there is Dr. Stone. I have never seen it due to my aversion to battle shounen, but I've read that it is very educational about how stuff works. As I said, I haven't seen it, so I'm not sure how light or dark it is, but it might be worth looking into. I'm also trying to remember how kid-friendly Silver Spoon was. All I remember is that I learned a lot about farming. That's why I'll list it for the educational aspect, but everything else about the show is wiped from my memory. I don't think there was anything in it that would disturb a kid, but I'm also not sure how entertaining it would be for one.