If you aren’t seeing Cheatsheet in macOS Tahoe’s Control Center, first open the Widget Gallery from the Desktop and then try again.
Thanks to @johnvoorhees for the heads up: https://www.macstories.net/stories/mystery-solved-why-third-party-apps-vanished-from-the-macs-control-center/
Mystery Solved: Why Third-Party Apps Vanished From the Mac’s Control Center
As I explained in my macOS Tahoe review, one of the biggest disappointments was how few third-party Control Center controls I had access to at launch. That was surprising to me given how many developers support Control Center on the iPhone and iPad. So, I spent a lot of time investigating the issue without reaching




