No offense taken, especially since I'm no expert and you may well be.
I've been trying to figure out just what would make a definitive statement on this question. We see posted here some scientific reports, certainly sounding scientific, though of unknown impartiality.
Wouldn't the word of an unquestionable authority -- for example, someone indisputably Semitic themselves, who might say in effect: "I recognize that face, it looks just like my Uncle Shem" -- wouldn't that end any possible debate?
Well, I live in Scranton, and we have a healthy Jewish population. In some folks you can see a Semitic look, others you can’t. I also know folks who look Jewish, but aren’t. People are so individual that one can never know with certainty. But to the point, when I see the Shroud, I see someone who very strongly resembles the historical representation of Jesus, if not Uncle Shem. Blessings, Bob