The only Asian countries I’m aware of which still claim to be Communist are China, Vietnam and the Norks.
China is still ruled by an organization calling itself the Communist Party, and uses some Communist rhetoric. But any country with several private property billionaires and a great many private property millionaires cannot be called Communist in any real sense with a straight face.
Vietnam is pretty much following China down this road.
The Norks have a hereditary God-King, who rules with a system elevating the military far above civilians in importance. What is Communist about that, except the language?
I agree fully with your general point that basically speaking, China is no longer communist except in name. So I don't mean to quibble. But it's not just several billionaires in China, to wit:
According to an article I saw the other day, China now has several hundred billionaires -- already something like 1/5th of the world total, with the number likely to continue rising.