Road Runners are popular and many fellers “tie” them up.
I make my own.
In order to achieve spin at slower speeds, you should be looking at willow leaf blades. Fins Spin jigs by Crappie Magnet claim to spin at slow speeds. They use a Shad Dart style jig head with an under spin.
In a contest to see which spun best, the Road Runner or the Fin Spins….I would guess Fins Spin as the swivel is at the optimum position to twist. Road Runners tend to have swivels at angles which would limit spin. Also, Fin Spins say the shape of their jig head concentrates water flow towards blade.