It’s still an EE, but some people consider an EE only what the hatchery tell them it is. I consider an EE any bird that is of not a pure breed like legbar, Isbar or Americauna that still lays blue or green eggs.
This is the correct answer. An Easter egger is not a breed, an Easter egger is any mutt that has a blue egg gene in their DNA.
breeding any recognized blue egg layer breed (carrying by definition two genes as it is a recognized breed) with any recognized other breed in the entire world result is an EE.
If you have two EEs (each having one blue egg gene presumably ) most of their offspring on average are mutts that are Easter Eggers but some will just be regular mutts.