The Illustrated Encyclopedia of Military Aircraft (p. 232) affirms: "The last generation of Italian fighters of the war, the so-called Series V, appeared too late to have any effect on the outcome of the war .... The Macchi M.C. 205, the Fiat G.55 and the Reggiane Re. 2005 appeared to be extremely useful aircraft and equalled if they did not surpass the best products of the American, Britsh and German aircraft industries."
All three used a powerful German Daimler Benz engine. All three had only limited production, the first two had limited service, and the last had a rear fuselage structural defect that was never fixed.
Since Aces High already has the 205, probably should eventually add the G.55. This would be another advanced but obscure fighter; much use in AH, like the F-4U1C Chog, could soon be disproportionate to its actual use in WWII.
This 568-page book was conceived and edited by Enzo Angelucci and an Italian staff and seems to be an excellent WWII aircraft reference source.