I’ve always thought so.
As a long time 1911 shooter I couldnt figure out why Glock pistols felt so off in my hand. Then I realized it was the grip angle. When I laid an XD on top of one of my 1911s I saw it. The grip angle is darned near identical.
So that did it for me.
L
Some say the angle, some say the hump on the grip.
I just know the XD fits me.