I don't believe there is a page. On v3 of the site, goung to the profile will sometimes include the closure reason.
Icons next to member profiles

Sounds like you are on v3. I believe that is just a generic closed account designation. You would need to look at the profile to see if there was a logged reason.
As to a list, up until a few days ago, there were only a couple of icons. The X in the forums and another icon on game archives and profiles, though the X could show there too.
I guess it is possible a list might be made once v3 is the default but I don't know that for sure.

Oh you are right, if you go to their profile it shows the status. I was looking at someone from a tournament we are playing so I was looking at the tournament profile thingy, not the full profile.
It says the person closed his own account. He is in my group, 2 out of 5 go to next stage, what happens now that his account is closed? Will places 2 and 3 advance instead of the first two? He was first in the group, not all games are finished yet in the group.
His tournament entry/profile says "Active" ...
Is there a page where I can see descriptions of these icons? So I understand who had his account closed because of cheating, who closed it himself, who has a subscription etc?
I am on Android Chrome and I don't get a tooltip because I can't hover.