Shift-Command-N
Show or hide folders
Option-Command-S
Show the main Notes window
Command-0 (zero)
Note: This shortcut is useful if a note open in a separate window is blocking the main Notes window.
Show notes in a list
Command-1
Show notes in gallery view
Command-2
Show attachments
Command-3
.
Show or hide highlights in a shared note
Control-Command-I
Show or hide the activity list in a shared note
Control-Command-K
Action
Shortcut
Apple Support article: Mac keyboard shortcuts