It is actually a pretty good system for the CCP "politburo".
Politburo (= "Political Bureau") of Central Committee of Communist Party of Soviet Russia. Also, a Politburo member becomes The Chairman.
In a nutshell, ringleaders of ringleaders of Bolsheviks. *MUCH* more equal than the others, naturally.
https://www.abc.net.au/news/2021-07-01/ccp-100-years-chinese...
Honestly, that article has some shit "play with your emotions!" bits in it too but there are facts to be gleaned.
mnouquet talks about the Inner Party
Over 90% of the population of China are CPC non-members (membership numbers I can find are consistently under 100 million).
100% are subject to rule by the Communist Party of China, though.