I would say the most consistent orchestra, with different conductors, over the recording era would be the VPO.
Second would be the BPO (especially under Karajan).
Third place goes to Amsterdam Concergtbouw (Probably spelt that wrong - )
The rest of the places could go to Chicago, Philharmonia, LSO, LPO, New York Phil. Philadelphia, Clevelend. (in no particular order )