the main difference is that they only paid lip service to the "socialism" aspect of the NSDAP name, and utilized cronyism rather than nationalization to control German industry.
Ummm, so the Nazis ITTL are closer to Mussolini's Fascism than Stalin's National Communism?
Anyway, back to the point, no forced disbandment of Germany into five drastically different Kingdoms would meant they will have easier time reuniting and regaining their own power.
Bavaria has their old monarchy restored under the former Crown Prince, now King Ruppercht of Bavaria. Being the primary leader of German resistance against Naziism and, and his personal actions to save the Jews, King Ruppercht was almost expected to become the new Kaiser if Germany did not end up being partitioned five-ways, but he did agree that Germany must be partitioned in the first place for the Great Wars to never happened again. Now, Bavaria ends up as the center of arts and humanity studies, respected amongst Europe but didn't really wield any true military or economic clout.
Saxony (including old Hanoover land) was basically given to Prince George of Britain, who reigned as George II of Saxony, because the House Winsdor (Saxe-Corbug Gotha) is the closest Cadet Branch of House Wettin. They are now basically British dominion in all but name, due to Saxony Army Officers and Higher Ups being basically handpicked and rotated with the British Royal Army.
Rhineland is basically French-dominated Germany, and thus ends up having a Republican constitution written down for them. Being the smallest German 'Kingdoms', they have all the Rhineland Industries and mines, but those are too specialized and end up depending on France for Financial trades. Now, they could be directly annexed by France and nobody would think all the wiser.
Hesse is the central German Kingdom, nominally ruled by the Prince of Hesse, given back to Prince Philip, Landgrave of Hesse. Being the second smallest constituent of German successor Kingdoms, they are rather average in anything.
And lastly, the problem area, Prussia. Their western possessions end up given to Saxony and Bavaria, while Poland taking the rest of the east. The Allied tries to make sure that the Rump Republic of Prussia are throughly demilitarized and have their existing industries stripped down. They are the only German successor 'Kingdom' not permitted to have any kind of Army other than lightly armed Police Force, and there are laws forbidding Male Hohenzollerns to even set foot back on Prussia, just to be sure. They are now mostly made of farmlands, and under Polish domination, something that really makes you wonder what the Poles are thinking by decimating Prussia like that.