@peternlewis, I have made a DRAFT mod to the Wiki Actions page to add a category for UI Apps. It is not complete, and needs links.
I couldn't find an easy way to get the links for the Actions I have entered.
Perhaps you can convert these to links since you have full access to the Wiki. And add any Actions I have missed.
When I was answering a user's question, it occurred to me that it is NOT easy to identify all of the KM Actions that action on the Mac UI, even for an experienced user. For a new user, it is probably next to impossible.
So I think we need a UI Actions category on the Action page that lists all of those Actions.