I've never seen a semi-auto with the ejection port on the left side.
Is there such a thing?
As has been pointed out, Walther had a thing about ejection to the left. But there are also pistols like the Beretta 1934/35 that eject straight up and back. I had an occasion to talk with J.B. Wood, who's written extensively about Berettas, and when I asked him how I could keep from getting banged in the forehead by hot brass, his answer was, "Wear a hat with a visor."



























