American Vintage 62RI was always a stackknob (from the launch in the eighties until discontinued in 2012), but there are people who swapped the stackknob for a VVT-layout.
A Japan 62RI (JB62) is a VVT with an earth-strip between the bridge and the bridgepickup
A Mexican 62RI (Classic '60) is a VVT without the earth-strip
The Road-Worn 60 is a Classic '60, reliced
And then you have the custom-shop models, being the '60 (stackknob, relic, closet classic or new) and '64 (VVT, relic, closet classic or new)