For Amman there are 193 on Yasni with different names.
Among the most common last names on Yasni Amman is on position 4334.
Whether it's true, I can not say. The mayor in Switzerland should "Ammänner" hot, so it might be possible that the name was derived from there. But would be an explanation for the origin of this name.
(Sent from: Gerd Amman)