[amiga386]

There is also what's called "Oversight", which performs actions that are invisible to the public and administrators alike (though not invisible to some very privileged people)

https://en.wikipedia.org/wiki/Wikipedia:Oversight

There are also "office actions", where essentially the Wikimedia Foundation and/or its legal counsel have been required to do something. In most cases, the office actions are visible and logged, unless they've been required to use Oversight as well. But the main thing is that the office actions will generally not be explained to anyone, as it usually stems from some legal threat to Wikipedia.

https://en.wikipedia.org/wiki/Wikipedia:Office_actions