Specific Doll (Identified) Which DF-H sculpt is it?

I think it's Agares.

 

It's not Agares. Their eyes and ears are VERY different. Your head has very prominent ears.
My guess is Chang Sheng, but it's hard to tell for sure because his ears don't show on the company pics, and I haven't been able to find any owner photos.
Their profiles look very similar though, especially the nose.
I was able to find him here.

Edit: after some more internet sleuthing, I was able to find owner photos of a modded Chang Sheng, and the ears are the exact same as your pic. So I'm 99% sure your head is a Chang Sheng.

 

Oh, I just realized Cobaltconduct has shared a waybackmachine link. So using that, I was able to find blank pics of Chang Sheng.