What would four Queen Elizabeth-class carriers be called?

If Britain had built four Queen Elizabeth-class carriers, what would they have been called?

Queen Elizabeth, Prince of Wales, Ark Royal, and preferably Hermes, with Eagle another possibility.

In this hypothetical four-carrier fleet, Queen Elizabeth and Prince of Wales keep their names. Ark Royal is suggested for the third ship. Hermes is the preferred fourth name, although Eagle is another plausible choice.