Bit of a biased vote towards Spitfire for me. Although i prefer the very late war ones, especially the Griffin versions, over the IX's Unless they are the Clipped Wing models.
Mustang, although easy to guess being the D version, should have made it visible on the post, as could have the horrible Allison engined versions.
Sadly though, my preferred aircraft in a fighter role isn't going to be added being the Hawker Tempest, Followed by Typhoon in a joint first with Mosi' for ground attack for Brits at least. P47D is brilliant for that role.