Major apps…
Discord, LastPass, AWS Client VPN, Microsoft To Do, and Microsoft Teams
At least a couple of those are wrapped web views and one is just a configuration tool, hardly major headaches to port, compared say with Adobe Photoshop or OpenOffice, or anything that uses some of the kernel extensions that Apple has decided to outlaw.
While Apple has been trailing the APIs for the change for a while, it's going to be more than a simple recompile for many developers and Apple knows it, which is why the committed to 5 years support for Intel Mac. In the meatime there are a whole heap of bugs as a result of the change to the new architecture. This, along with waiting to see how much of a walled garden MacOS an ARM is, is what is stopping me from switching to MacOS 11.