A2, but please don't start the rumor train that it's the same as a "JB with an A2" or "JB2", because it's not at all
A JB is 16.6K, so this is clearly not a JB. But all those other 16.6K pickups use the same bobbins.
I have no idea what you are trying to say here. Are you talking about the Distortion, Invader, etc?
I don't know how a winder can continuously spout that nonsense. Everyone would be Seymour if there weren't more to it than winding a coil to x amount of turns.