I'm not sure where you are going with your comment? I think both of us clearly understand that from our comments...that there is no such thing as a literal 'Caucasian' in the Realms....but there are analogues to various RL ethnicities and cultures, even if those associations are somewhat loose in places.
Apologies for the incredibly delayed response! Basically, I try to avoid invoking certain associations (such as bringing up "Caucasian" in the context of The Forgotten Realms) because - despite our best efforts - they cut down on the imagination.