What would the United States use for carriers if the Lexington-class cruiser hunters were built?
Short answerIt would still convert spare Lexington hulls unless all six battlecruisers were completed, in which case another hull or a new design would be needed.
NotesIf some Lexington hulls remain available, converting two is the straightforward American carrier answer. The design already provides the size and speed needed for large fleet carriers. Completing all six as battlecruisers removes that convenient option and forces planners to look at battleship hulls or a fresh carrier design. Carrier development is therefore tied to cancellation policy and sunk construction work, not just to aviation doctrine.