I would generally consder all the kre8tiv, 'trendy' names (McKinley, Brynlee, Jaidyn, etc.) to be pretty much uniquely American. I don't know about other countries, but here in Britain you would usually only hear those sort of names in (trying not to sound too snobby) kind of 'trashy', lower class families, and only VERY rarely.
There are also names such as Alyssa and Madison that I would consider to be very American names, but it's not that they couldn't be used here, they just haven't really caught on. That also applies to the whole thing of unisex names and surnames used as first names (Parker, Riley, Carter, Keegan, etc.)