I found this in the xpad driver source code, and I was wondering if we should add all those controller names (at least the ones with XTYPE_XBOX360 and XTYPE_XBOXONE) to the default .gamepads file. They probably have the same button maps (They were consistent between Xbox One, Xbox 360 and Chillstream from what I noticed).
For example, there are at least 3 versions of the Xbox One controller, with different names.