the only type I have seen you mention that roughly matches WWII fighters is the trainer, A Harvard or Texan or something similar.
'Cuz it's the only single engined monoplane of WW2 vintage I've flown, and at that, not much...
Can the Harvard sustain faster turn rates at full power than it can at reduced power? I do mean SUSTAINED speed on fully horizontal turns
I don't know, I didn't try it. I no longer have the opportunity to fly that plane.
I agree that there are likely technique differences between combat flying a WW2 fighter, and today's civil airplanes, so the typical experience of civil pilots may not represent the nuance factors of WW2 fighter flying. Hopefully you can find a warbird resource for your research....