The stage manager is a handy feature in macOS Ventura, but I’m missing a keyboard shortcut to access it immediately.
I used BetterTouchTool to quickly access the Stage manager by pressing F4 (Magnify Key).
In this case, the edge of the screen is the position. When I press F4, the mouse pointer automatically moves to the edge of the screen (you can also use the Drag Mouse to Position action), the screen manager appears, and I can select the open application immediately.