Simply drag a number of related windows together
EDIT: actually it seems possible to make it "autohide". But it won't let me have more than one window visible at once!
On Windows, there is a nicely and predictably maintained Z-order, whereas MacOS insists that if I want to switch focus, surely I want all the windows that the other app has to offer, which feels like a big "mishmash" to me.
This had not been the case. Command tabbing would bring forward only the last active window. It was very handy to switch back and forth between text editor and browser that way. But then, they decided command tab should bring forward all windows, which ruined usability for me. Now I use BetterTouchTool [0] to directly switch to an app. Doing so brings forward only the last active window.
