My modest proposal is, the obvious, MACCHI-series, 200, 202 and 205; Fiat CR42 Falco vs Gloster Gladiator.
As for buffs and Torpedo-bombers: Savoia Marchetti SM79 Sparviero and CANT Z1005 Alcione!
Transport: SIAI MArchetti SM82 Marsupiale
OK, I confess: behind the nickname of SPARVIERO hides itself "luigip" of 4°Stormo Caccia in WB, working in the shadow in order to finally get some Italian planes in a WWII flying combat sim! Will he and his sqaud mates be successful sometimes, somewhere, over the rainbow? ;-))
BTW: it was time to hear again about PYRO and Co! It's a pleasure, welcome again!