Turn rate = degrees pr. time unit right?
In AH: A6M2, A6M5, Hurricane I, Hurricane II/Spitfire I, Spitfire V, FM-2/N1K2/Spitfire IX, etc etc....in this order approximately.
Better monoplane turners we still are about to get: Well, the Oscar, the Nate and maybe some more.
Then the Biplanes....Gladiator, CR42, even Swordfish...
The Storch is of course an uber turner, but not much faster than an M16...