Shortcut to open/close sidebar in Notes app? In Safari, you can press  Cmd ⌘  ⇧  L  to open/close the sidebar. When pressing this shortcut in Notes however, it creates a list.

What's the shortcut in Apple's notes app to toggle the sidebar?
They don't actually call it a sidebar, they term it 'Folders'

It's in the View menu as Show or Hide Folders, with no default shortcut

You could make your own shortcut in System Prefs > Keyboard > Shortcuts >App Shortcuts - though you'd actually have to make two, for the different wording.
If you chose to re-use  Cmd ⌘   Shift ⇧   L  you would also have to reassign Checklist from the Format menu to something else before it will work.

Shown using a different key combo below for simplicity