Too many I am afraid.
Lets see....1/4, 3/8. 3/8 extended, 1/2 all Milwaukee Fuel.
Many 1/4, 3/8 and 1/2", various brands including Gearwrench, Proto, Pittsburgh, Craftsman, etc......
My favorites have to be the milwaukees, followed by the rotating head Pittsburgh, strangely enough...