The clip that holds on the non-screw crank is actually part of the padded crank insert. But more importantly, look at your splined shafts on your window regulators. Do they want screw-in cranks or clip on cranks? It will be obvioius when you look at them. If someone replaced one of your regulators, it is entirely possible that you have one of each.
I have a variety of crank inserts in various colors, both styles, and I have a variety of cranks.
Scott