I have always been a fan of the RN FAA schemes from the late 40s through to the late 60s. I also love the look of the British carrier based aircraft themselves but must acknowledge that they, although competitive when first flown, were usually obsolescent by the time they entered service. This idea is that Australia, Canada, India and potentially New Zealand and South Africa, maybe even the UK made extensive use of USN aircraft but used the 1950s RN FAA schemes.
I know Canada had Banshees but I was thinking Panthers, Cougars, Tigers, Crusaders, Skyhawks, Skyrays and of course Furies. Maybe, depending on a new generation of carriers in the late 50s early 60s, Intruders, Vigilantes and Phantoms. Replacing the duck egg blue or white undersides with sea grey or light sea grey, I could even envisage Tomcats, Hornets and Vikings into the 80s and 90s.
Then again a RAN Centaur loaded to the brim with Sea Venoms, Seahawks, Wyverns and Gannets would have looked pretty good.
Maybe an extended US MAP leasing surplus Essex Class carriers and USN style airgroups to allies free of charge with those lucky navies just choosing to use their existing stocks of paint as the aircraft entered deep maintenance. These would serve along side the currently owned UK sourced carriers and airgroups but were primarily intended to slot into USN battle groups during exercises and wartime.