Here’s a curve ball for you, there were no good guys.
The Axis powers - Germany and Japan in particular - had to be stopped. We likely would have had Germany controlling and occupying Western Europe - including the UK and the Soviets controlling Eastern Europe and Eurasia, with ongoing war between them and the associated genocides and exploitation. Japan would have controlled the Asia and the Pacific including Australia with the associated genocide and exploitation.
Sure, the Soviets and the Western powers carved up Europe afterwards but clearly that future was much much better than what we could have got.