Ok - so bumping this as I have come across a couple of new ones.

"Blaze and the Monster Machines" - a little boy (A.J.) drives around having crazy STEM inspired adventures with an anthropomorphic monster truck. (There are a lot of STEM errors in the episodes I have seen - hydrofoils rise up out of the water only when moving, and they had the hull exposed all the time). But my kid likes it. Mostly because there is a little boy driving around in a talking monster truck.

"Sarah Solves It" - (new pilot show from amazon - seems a little like Peg+Cat).