What is the diference of all 10X series

What is the diferences of all 10X series?
I suppose the 10XR doesn’t have keyboard and the X Series have keyboard

I’m correct? sorry for inconv


I saw a keyboard for Hi10XR and Hi10 Air.

At the same time, I saw a keyboard for Hi10X and Hi10Air.

RESULT: This keyboard is compatible with Hi10XR, Hi10X, and Hi10Air, if CHUWI and Amazon say truth.