Show keyboard shortcuts in mouseovers

Use case or problem

Learning and reviewing keyboard shortcuts.
The toolbar on the left has nice mouseovers that show the name of the function that’s linked to each button.
Learning keyboard shortcuts is kind of hard so I fall back to the mouse from time to time.

Proposed solution

Add shortcuts to the mouseovers.
For example, the mouseover for Settings should be
Settings (⌘,)

Current workaround (optional)

⌘P to see all the commands and scroll and search, or look at the keyboards in settings.