Sigh -
In no order
C-47
Me 262
Spifire XIV
P-51B
F4U
Ju 88
B-29
Mosquito
Ta 152 (or Fw 190D)
TBF
with Honorable Mention to Yak 9, Me 109G, Hurricane, Lancaster, SBD, FW190A, Ki 84, Zero, P-47D-25 or above, P-38J-25 or above, B-17, B-24 , Feisler Storch, AT-6, and a lot of others.
I tried to think about them in context of Best in Class which by definition took out a lot of famous aircraft. Fighters dominated because WWII was about control of the air - to get control of the war.