There's the shortcut Cmd+tab for switching between open applications. Then there's the shortcut Cmd+` for switching between open windows of the same application. But if I have the same application open in two different desktops, neither of these shortcuts are really applicable. Cmd+tab to an app with multiple simultaneous desktop instances just goes to the desktop for that app that you were most recently using. Cmd+` does nothing.
For instance, I have the terminal version of emacs in one desktop. Then I have another desktop with some terminals. How can I easily switch between these desktops using only my keyboard? The easiest way I see is to three-finger swipe up on the trackpad and use the trackpad to select the desired desktop.
I'm on Catalina, version 10.15.6.