I use the keyboard shortcut for Find in Files (CtrlShift+F), and use other hotkeys, like Alt+R to toggle regex matching on/off (though I wish they'd used the same shortcuts as Visual Studio!
In Visual Studio you can jump to the File Types input with Alt+T, but I can't figure out a way to do it in VS Code, I have to resort to pressing Tab 5 times. Anyone know the keyboard shortcut to jump directly to that input?
New answer: Up/down arrows now navigate the history of each search field. You can use cmd+up/down to switch between the inputs.
Original answer: You can use the up/down arrows to switch between these inputs.