Do we know how many died in China, North Korea? I have heard that there are some who are missing, who have not been heard from in a very long time...it isn’t known if they are imprisoned, undercover, or killed.
Having said that, there may be such a list maintained someplace and I will definitely keep an eye out for it.
It is good to have some concrete names in mind for when you offer your personal intentions for Mass, for when you pray a rosary, and so on.