Battery, AirPods, downloads, Focus and more slide out of the notch, then step aside. Turn on only the ones you want.

Built into Ledge for macOS.
The most important one takes the place beside the camera, with up to two more in side pills next to it.
While a song plays, its cover and wave stay in the notch until something more important comes along.
Add-ons can show their own, like a countdown. They come after Ledge's, and you can turn them off.