On Jerez (also Cádiz and the coast nearby), this has some very good recommendations: Tuna experience: El Campero, Antonio or somewhere else and tapas in Cadiz
Consider 1-2 nights in nearby Cádiz and a trip to Barbate for tuna dishes, (perhaps shortening Malaga proper).
We quite enjoyed MANTUA (high end with great sherry pairing) and also the same chefs’s Albala (more casual, get the meatballs).
Erica has a few good threads on Jerez including this one: PROVINCE OF CADIZ...near Vejer de la Frontera
In Cordoba, we have enjoyed NOOR as much as any restaurant in Spain (the short menu won’t overwhelm). They are moving through Cordoba’s gastronomic eras (starting in 1236) interpreting the ingredients and dishes of each time period.
In Granada, it’s not within walking distance of the key sight , or in the magical Albacin with views of the Alhambra but Bar FM serves up consistently excellent seafood of the kind that can rival the more famous spots in the North of Spain. Some are dissuaded due to the location but it’s worth an 8-10 min taxi ride each way. Despite its tapas bar setting you will need a reservation.