What states were allies of France in 1812?

Bavaria; The Confederation of the Rhine; Saxony; Wurtemberg; The Grand Duchy of Warsaw; All of the above, some more willingly than others, supplied forces for the Grande Armee. Therefore as many were German as were French. Therefore their loyalty to the Emperor was increasingly dubious and some changed sides. For example Hanau in 1813 was a Battle fought by Napoleon against his former Bavarian Allies. Nassauers & others, some Dutch, for example, had fought for Napoleon before aiding the British, numerically at least , fighting with Welington at Waterloo. This may well have been the case with Bluchers Prussian Forces, but I do not know if this is fact.