Window stacking order can be queried with tcl calls: https://stackoverflow.com/questions/10343759/determining-what-tkinter-window-is-currently-on-top/10391659#10391659.  I do not if there is the equivalent for frames.  Note that uses can change window stack order, hence the need for a query, but not frame stack order.

https://stackoverflow.com/questions/35690249/tkinter-is-it-possible-to-change-the-stacking-order-of-placed-frames claims that frames are initially stacked in order created. Verify if you want. After that, keep track of how you change the order.