The Sampul tapestry's importance consists in the fact
that it skips the conventionality of the Greek-Roman art,representing
peoples' faces simply as they really were.
The man is Dinaric,most likely of Macedonian ancestry or from the
Macedonian-Greek-Paleo-Balkanic spectrum.
https://upload.wikimedia.org/wikipedia/commons/0/0b/UrumqiWarrior.jpg
"
His headband could be a diadem, a symbol of kingship in the Hellenistic world
– and represented on Macedonian and other Greek coins."
https://en.wikipedia.org/wiki/Sampul_tapestry
"
In the army there were 25,000 Macedonians, 7,600 Greeks, and 7,000 Thracians and Illyrians, but the chief officers were all Macedonians, and Macedonians also commanded the foreign troops"
"Because the two symbols of Achilles (Chiron) and Heracles (Nemean lion skin) are combined,the tapestry might also be a representation of Alexander the Great — he referred to these as histwo ancestors and was often represented with large eyes."
"Descended from the Argead kings of Argos, Alexander claimed Heracles as his ancestor; thus he was consideredto belong to the first generation in the lineage of this royal family that started with Heracles’s legendary son,Temenos. Alexander believed himself to be a relative of Achilles through his mother as well. Although the blue-eyedking represented on the Sampul tapestry does not really look like Alexander, the association with Chiron andHeracles should indicate a certain degree of ethnic connection, if not a lineage."
(SINO-PLATONIC PAPERS)
EDIT
My observations antedate copy-paste.
https://s-media-cache-ak0.pinimg.com/564x/c0/23/e0/c023e07ad9a625525d0856491c172dd6.jpg
EDIT2
He had probably acquired some Central Asian/Bactrian sets of genes,but his main traits
remain Dinaric.In any case,if there was a Khotanese stylization,the effects are obviously
milder,because the man strongly resembles by his Dinaricity,the Aromanians,the Macedonian
Greeks,the Macedonian Macedonians,the Greeks or the other Balkanic people.