One of the most unique Propeller driven aircraft of WW2 I think is the De Havilland Mosquito. While most of the aircraft where classified into fighters or bombers, the Mosquito has an in between status with out the typical draw backs of combined use aircraft.
One of the other unique features of the Mosquito is it’s built out of wood. Despite being seen as an inferior material, performance numbers for top speed where in the same ball park at over 400 mph & a service ceiling of 37,000′. This aircraft also served all the way up to 1963 well into the jet age.
With 8 forward facing machine gun’s right in the nose this aircraft packs a serious punch.
For the RC readers there are some options:
Outerzone has a great free RCM Plan from 1978, this model has a 67″ span and would likely make a good electric model, preserving the streamlined cowlings.
There are also some discontinued kits that may pop up on ebay or at an RC auction: