Spitfire list, we have the bolded models:
Spitfire Mk Ia (87 octane)
Spitfire Mk Ia (100 octane)
Spitfire Mk Ib
Spitfire Mk IIa
Spitfire Mk IIb
Spitfire Mk Va
Spitfire Mk Vb
Spitfire Mk Vc
Spitfire Mk Vc (clipped)
Spitfire Mk VII
Spitfire Mk VII (extended tips)
Spitfire LF.Mk VIII
Spitfire F.Mk VIII
Spitfire HF.Mk VIII
Spitfire F.Mk IX (Merlin 61)
Spitfire F.Mk IX (Merlin 63)
Spitfire LF.Mk IX (100 octane)
Spitfire LF.Mk IX (150 octane)
Spitfire LF.Mk IX (clipped, 100 octane)
Spitfire LF.Mk IX (clipped, 150 octane)
Spitfire LF.Mk IXe (100 octane)
Spitfire LF.Mk IXe (150 octane)
Spitfire LF.Mk IXe (clipped, 100 octane)
Spitfire LF.Mk IXe (clipped, 150 octane)
Spitfire LF.MK IXe (bubble canopy, 100 octane)
Spitfire LF.MK IXe (bubble canopy, 150 octane)
Spitfire HF.Mk IX
Spitfire HF.Mk IX
Spitfire HF.MK IX (extended tips)
Spitfire Mk XII
Spitfire F.Mk XIV (100 octane)
Spitfire F.Mk XIV (150 octane)
Spitfire F.Mk XIVe (100 octane)
Spitfire F.Mk XIVe (150 octane)
Spitfire FR.Mk XIVe (100 octane)
Spitfire FR.Mk XIVe (150 octane)
Spitfire FR.Mk XIVe (bubble canopy, 100 octane)
Spitfire FR.Mk XIVe (bubble canopy, 150 octane)
Spitfire Mk XVI (100 octane)
Spitfire Mk XVI (150 octane)
Spitfire Mk XVI (bubble canopy, 100 octane)
Spitfire Mk XVI (bubble canopy, 150 octane)
Spitfire Mk XVIIIe
Spitfire F.21
I know I left off many engine/fuel/wing/armament combinations. I also didn't touch Seafires at all.