Which carrier air groups were considered elite

Which aircraft-carrier air groups were considered elite?

Yorktown's group, several wartime Royal Navy groups including those on Illustrious, Ark Royal, Victorious, and Formidable, and groups associated with Lexington or Saratoga had elite reputations.

Yorktown's group is the American example, while Royal Navy groups associated with Illustrious, Ark Royal, Victorious, and Formidable were regarded as highly capable. Ships named Lexington and Saratoga also carried recurring prestige. The short answer offers a set of concrete starting points for studying carrier air-group culture and combat reputation.