This is not unusual. A lot of large organizations have a ladies' whisper network where they tell each other where the "missing stairs" are; those men it is unsafe to be left alone with.
Edit: it may be possible to reassemble the list from existing allegations; https://www.dailymail.co.uk/news/article-10726693/More-50-MP... / https://www.theguardian.com/uk-news/2022/may/18/list-of-sexu...
It's disgraceful that there's such a cover-up about it. To clean up the systems and make it a safe environment, one needs to know the perpetrators. Also, who says all on the list are actually perpetrators? Theoretically, there could be a harmless person on the list that was put by an opponent to destroy them.
Thats exactly why you dont leak the list. Furthermore, making the list public increases the incitaments for adding innocents to it.
An anonymous leak of an unwritten list is meaningless. I could say I'm actually an MP and the most frequent name to come up is jll29, and what could you do to stop that?