First of, Christian Grey is a female fantasy. That already skews things.
Having said that, he's indeed LIE-Te in my estimation. He clearly values Se. His Se HA is off the charts. And he's very much a pseudo aggressor gone wild. He's as Aggressor as an LIE could ever be. Which is likely unrealistic.
Yeah it's mostly true that a lot of bondage enthusiasts are Delta, but not exclusively so...