I do not have a picture of the ones that looked Caucasion. I visited Xian in 1983, not too many years after it was first opened to the public. I was amazed at the statues and how many of them were spitting images of people that I had known over the years. (I grew up in California and had many Chinese friends and acquaintences.)
In addition there were two or three that looked Caucasion — curly beards, different uniforms, etc. I thought they looked like Turks, or eastern Europeans. They did not have the typical Mongolian eyes.
Only a small part of the tomb was open to the public at that time. There have been many more discoveries since then. But you are right when you say that most of the images that are public are the same warriors, depicted over and over again. Intruth there are many different warriors, each one distinct.
My cousin is married to a Mongolian.
Plenty of them believe some of their ancestors were Caucazoid and came from the western steppes
and they speak of tombs like that in the Tarim Basin
btw...she appears to be an excelent wife....very much at home down South