OKW has only 3 buildings with elevators - Buildings 62, 63 and 64. Of those 3 buildings only 63 has any GVs and it has two with one being HCA. To my knowledge, none of the OKW GVs have an exterior door for the upper level (2nd floor of the GV) - so even though the elevator goes to the third floor of Building 63, there is no way to enter the GV from that level - the main floor of both of those GVs is on the 2nd story of building 63. As Debbie noted, OKW has only one GV (Building 48) that has ground level entry to the GV and all of the other GVs have their entry on the 2nd story of the building they are in.
At SSR, the GVs were all built with an exterior door into the upper floor hallway of the GV and all SSR buildings have elevators for each floor so there is elevator access to the 2nd floor of all of the SSR GVs from the outside. There are no
DVC GVs with interior elevators to go between the two floors. I'm not sure if the SSR HCA GVs have HC accessibility for the second level of the villa. To my knowledge no DVC GVs were constructed to be HCA on the 2nd floor but a wheelchair at least can get to the 2nd floor of SSR GVs even if the upstair bathrooms/bedrooms don't meet HCA code.
I hope this is a little clearer.