No not all of them have an opening window (GV doesn't for sure, and I think the RAV4 doesn't either), and that's really too bad because they are very useful.
I guess I don't care too much about this as the few times I needed to load something in the cargo while being parallel parked, opening the window was all that I needed...
When I did groceries with the CR-V, we parked in a parking lot, so which side the rear door opened didn't matter much.
That said, if I lived downtown Ottawa, or in a city like Montreal where you have to parallel park most of the time, my position on this might be different... but as long as my SUV has an opening window, I really don't care which side opens... as long as it has that window.
So my preference for SUVs:
1) Right-side with opening window
2) Lift-up
3) Right-side without window (would have been Left-side without window, but that doesn't exist!

)