@VectorStyler Great, thank you for your attention to this - as well!
Select Previous - of course, noted..
In Macromedia FreeHand - my usual reference ad nauseam - the Click Through action is done by holding Ctrl + Right-click to cycle through the stack.
Hold Shift as well to add or remove Click Through candidates to/from current selection.
Hold Alt as well, to Deep Select into groups, composites, clipping groups, to add or remove Click Through candidates to/from current selection.
BR/ Lars Herold