In my opinion, out of all of the CAD you listed, Solvespace is by far the best to teach someone starting out. The interface is not absolutely overwhelming unlik

In my opinion, out of all of the CAD you listed, Solvespace is by far the best to teach someone starting out. The interface is not absolutely overwhelming unlike every other option, it is super fast and lightweight so you don't get frustrated, unlike every other option, and it is pretty amazingly reliable. It is definitely limited in the complexity of items you can make with it, but it is amazing for learning mechanical CAD.