I found this question (How do I easily switch between windows rather than applications with ALT+TAB in GNOME?) and it's better than nothing, but I'd like to be able to set the behavior of alt-tab the way I want it. Is there such a setting in gnome-shell?
What I would like is just to change the start of the alt-tab behavior to the last used windows whether it is in a different or the current app and that selecting the current app, will SWITCH to the last used window not ~switch~ to the current window.