Certainly not all, as you write. There may be a kind of look which may be more common among Jews in the West than among other people, but surely there's also a great deal of diversity. I don't think these Jews fit your description:They all have this very particular, somewhat "goofy" look. You can spot a Jew a mile off.
I don't think Fernando Pessoa was actually a Jew, but he is a perfect example of what I mean by the "Jewish look".
Well, I tought I should post a guy too