Hi Dave S not quite as WW2 is further back from us now than WW1 was in 1980. But apart from that there were very many aircraft in both wars.
When the need for speed and then the mission requirements are put into the design then I contend that for the same number of engines per aircraft they all looked much the same!
There will always be the odd one but take the Mosquito. Not much different to the Messerschmidt 210.
The main claim that the Mosquito is remembered by is that it was made of wood, I know it was fast and safe etc.
Later perhaps compare the Sabre (very elegant a/c) with the MiG 15, not quite so good looking.
Then there is the Me. 262 also a good looking a/c but we had the Meteor, perhaps not such a pretty sight. Both slim body, 2 engines but the 262 exploited the swept back wings. Otherwise similar
Depends on how you think of favourite perhaps you worked on the a/c or had a family connection or read of the exploits, but fortunately we are all different.
Or as I once heard someone say "Yes, you are unique, just like everybody else"
I make no bones about it, for me its the Fairey Gannet and the Warthog, ugly but full of character.
Roy