I seem to remember Revolver being no. 1, with Nevermind and Pet Sounds in the next two spots (I forget in which sequence), but I may possibly be thinking of a different list than AM. What says Henrik?
When I sterted to collect lists it was an incredibly tight game in the top 10-15. I remember a very early list I made - long before the Acclaimed Music's release in 2001, perhaps in 1996 or so - when Ziggy Stardust was in a lead. That seems a bit odd now, maybe it was before I found rocklist.net.
The first web appearance my lists did was in May 2000 with this list. Still an extremely tight top 10 at that time, Blonde on Blonde was no. 1 and notably Pet Sounds and Revolver were only no. 5 and no. 8, respectively.
When Acclaimed Music was released in September 2001, Nevermind was no. 1, Revolver overtook the lead in June 2002 and Pet Sounds have parked at the top since October 2003.
One idea I've had for a project is to go through the old rankings at webarchive to come up with a graph of some sort for album and song placements. It's a truly monstrous task, and I think it would require the contributions of many, many people, but I think it would be a great feature to see how acclaim has varied over time for the albums and songs included.