Yeah, the Classic Pro is a Epi built version of the current series of Gibson T’bird. Same neck through construction, same pickups.
My take on the Pro IV/V is that it is the Epi “modern” interpretation of the neck through T’bird. That is - not “Classic”.
Both displaced by the Vintage Pro now (I think).
The other Epi T’birds, the IV, the Goth are their “value” interpretation of the T’bird. The various Limited Editions off the IV I think of as their “value plus” T’birds. They can have different pickups, guitar sized humbuckers.
I think I’ve spent too much time thinking about their model structure.
Oh, Gibson & Epiphone seem to call a vast range of pickups “T’bird +”.