There are 1.46 billion iphones, 3.3 billion Android phones and tablets, 1.5 billion Windows computers in the world. About 100 million people use MacOS.

I'd say with the (few 100 million) Chromebooks it's an equal number of Windows devices to the sum of the other ones you listed.

P.S. What happened to Android in your list? That is like leaving out the 500 pound gorilla :)

are you certain? At least mobile phones (android+ios+maybe some other with somewhat modern web browser) outnumber desktops/laptops.