The XD is not a 1911. They might share similar/same internal mechanism but they are definitely not the same. Pick up a Commander size 1911 and an XD. The grip angles are similar but the barrel rides much higher in the XD’s frame. It’s possible to get a high enough grip on a 1911 so the hand is relatively close to the barrel. I could not do the same with an XD. The grip angles does not necessary dictate that two guns are the same.
XD != 1911.
XD != 1911.