Apps with 'Hide MenuBar' feature

UnDistracted for Mac gives you the tools you need to make your desktop less distracting, so you can focus on the task at hand. Function: Hides desktop icons, Highlight active app, Hides Dock and menubar, Sets “Do not Disturb” mode.

Easily join your upcoming meetings (Zoom, Teams, Hangout etc) and call your contacts from the menu bar.