You're not far off and we're getting down to some semantics with offensive styles here.
Kiffin was, and to a large degree still is, a pro style offensive guy. One thing he didn't invent, or bring to Bama, but did emphasize was the HUNH approach with Blake. Sims, who had a hard time when he turned his back to the defense in passing situations, led the offense down the zone read options. We saw both of those in the first game against WVU.
When Locks was brought in as OA it was due to his experience with the RPO offense. We still had Kiffin calling the plays, Bama was still in a pro set, but we fans started to see the beginnings of the RPO. By the time we get into '16 (Kiffin with his third QB, Jalen) we saw the RPO as a main part of the offense.
Kiffin with three styles of QB's in Blake, Jake, and then Jalen...he literally ran three different offensive styles with these guys. It's certainly a "feather in his cap" when it comes to ranking OC's under Saban.