Various .30-06 chargers

#1

I got a dirt cheap bag of these at a show. I grabbed it because I saw the 1st charger which looked OLD to me. When I examined the rest at home, I realized that someone was trying to reconstitute the time progression of .30-06 charger development. So I arranged them into what I figured to be the development stages, from left to right.
The one on the left is a dummy charger, it has sloped ends for easier re-insertion of dummies and no tabs to hold ammo inside.
The rest I improvized based upon brass vs steel usage and presence of cut-outs for end tabs.
So, did I get it right? All but the middle had blanks (which I removed for photos) except the 1st one had 3 dummies.