What air group would a surviving Ark Royal likely have carried to Force Z?
Short answerProbably Sea Hurricanes and Albacores, perhaps about thirty-six of each, giving the force fighters, reconnaissance, and strike aircraft from types Britain could supply.
NotesThe Force Z counterfactual depends on what aircraft Britain could actually supply in late 1941. Sea Hurricanes are the likely fighters, with Albacores handling combined reconnaissance and strike work in a tentative even split of roughly thirty-six each. Royal Navy carrier aircraft often carried multiple roles, so the strike component would also provide the formation's scouting. Britain could assemble a large Sea Hurricane group more readily than an equally large force of Martlets.