I saw another map where Western Turkey, around Bosporus channel, Asian side, has autosomal similar with Italians. This creates the impression that people from this area migrated to Italy through sea ways, not necessary through Greece, but circumventing it. That's entirely possible since those people were navigating keeping the land in their sight, not necessary stellar navigation. That could be the source of Italian J///
It's very unlikely that Western Turks are autosomally similar to to Italians.