I found this article a while back.
http://waitbutwhy.com/2013/12/how-to-name-baby.html
It recognizes Utah as being responsible for names that are popular elsewhere. As far as naming babies goes, Utah seems to be a trend setter for the rest of the country.
The following popular names are specifically listed as names that were first popularized in Utah before catching on elsewhere:
Brooke
Natalie
Aubrey
Riley
Jaxon
Paisley
Braxton
Lacey