Zorin OS, is exactly what you describe, it's free but you can pay for support and some extra bells and whistles. Zorin OS is basically Ubuntu with sugar coatin

Zorin OS, is exactly what you describe, it's free but you can pay for support and some extra bells and whistles. Zorin OS is basically Ubuntu with sugar coating but in my view it does address all the usability/UX criticism coming from people transioning away from Windows/Mac. I am a long time Debian user but I transioned both my parents away from Windows using Zorin OS. Really happy with the experience overall. I am not sure they really grasp it but they love it, for them it's just a "free Windows my son installed".