If you two haven't tried Miraculous Ladybug, I'd highly recommend it for the cartoon category. It's about two teenagers who moonlight as the super heroes Ladybug and Cat Noir. It's sort of the generic villain of the day kind of show at first, and the female lead is kind of too perfect in almost everything she does, but the later episodes bring a lot of development to the series. It's overall just a really cute and fun watch. Definitely nothing super scary or inappropriate for a child audience.
I have no idea if it's on netflix, but it is on Youtube.