re: I guess I'm just finding the number of actions to load a new Layout a bit onerous these days.
iPadOS 15 and later have only added one extra tap of the screen to cause the MORE to drop down.
The fastest way to load is to tap the filename in the file manager, which lets you sort by name, etc.
The three dots can end up in different locations depending on the screen aspect vs the original layout aspect. On mine, they usually end up behind the right bank selector.
And, should you start playing with Stage Manager, the three buttons can end up anywhere along the top of the display. I would avoid Stage Manager with MDP2.