One of my favorite shortcuts for editing has to be the ripple edit from playhead. These are Q and W, and edit either Left or Right of the playhead, respectively.
Instead of using the razor tool, cutting the timeline, selecting the edit, deleting, then deleting the empty space, this shortcut does it all with one button press.
Hope all you adobe premiere pro editors can appreciate this :)
This works on all versions of Adobe Premiere Pro but this is currently on 2022.