Quite right on Malan. I do apologise! 19's aces were of more humble rank - including 'Grumpy' Unwin, for example.
Quite wrong on 92, however, despite 249's derring do on Malta! 249 had brief moments, but 92 were more consistent for longer. Or maybe Neville Duke et al are more convincing......?
One hopes that 54 is safe. Their wartime record (both wars!) was impeccable, especially in the BoB, and 11, 25 and 16 have far less claim to continued existance, especially as FJ or fighter units.