It would be helpful if I could see which of my articles / categories are private without having to open each one.

This could be indicated by symbols like a key, or a hand or a shield …

I am reiterating my suggestion from September 8, 2021, which has 15 supporters.

Azure Thrush’s suggestion from April 27, 2023, has 20 supporters: "Implement different label for private and internal"

That makes a total of 35. I’m sure there are even more suggestions on this topic.