Yeah, I’ve been made aware of the Graf Zeppelin and the other two planned carriers.
Hitler, however, showed a great lack of foresight by not rushing completion of the naval air arm before he started his land war. Would have made a big difference dealing with the British navy.
My favorite what -if is the question of what might have happened if he had used the steel and labor on the Bismarck and Tirpitz for U-bots