Tuck-Back Folding: "Birds Do It, Bees Do It..."
This type of folding is really straightforward - pretty much the way living birds fold their wings - however a diagram(s) to really illustrate the way Grumman implements it on aircraft would be so complex that I won't (yet) even try. Suffice to say the examples to be appended as "replies" below, will show exactly how to engineer and install this type of wing-folding - and pretty realistically, at that - on models of the appropriate aircraft.
I can now make the above prediction with high confidence, as I just engineered my very first, successfully tuck-back-folding wing:
This is the starboard wing of my Accurate Miniatures 48-scale TBF Avenger (Thanks, Donny!). Stand by for a photo-primer(s) on just how to do these, and the tuck-back-folding wings of other aiarcraft which had them...