The popularity (frequency) distribution of given names typically follows a power law distribution.

Since about 1800 in England and Wales and in the U.S., the popularity distribution of given names has been shifting so that the most popular names are losing popularity. For example, in England and Wales, the most popular female and male names given to babies born in 1800 were Mary and John, with 24% of female babies and 22% of male babies receiving those names, respectively. In contrast, the corresponding statistics for in England and Wales in 1994 were Emily and James, with 3% and 4% of names, respectively. Not only have Mary and John gone out of favor in the English speaking world, also the overall distribution of names has changed significantly over the last 100 years for females, but not for males. This has led to an increasing amount of diversity for female names.

[From Wikipedia]

Delaney Olson
Caroline Montes
Marlee Jennings
Sophie Hopson
Lucy McCollum
Reese Aldridge
Michelle Varela
Kylee Sylvester
Kiera Henley
Diana Doss
Alicia Moseley
Anastasia Schmitt
Fiona Lilly
Chelsea Jackson
Kate Aviles
Lucy Cardwell
Hope Bean
Allyson Bartlett
Riley Everhart
London Buchanan
Jasmine Franklin
Mariana Gallant
Isabella Bouchard
Janiya Worthington
Madyson Landrum
Carolina Younger
Savanna Huston
Allie Earl
Kayla Lowry
Diana Moreland
Valerie Conn
Kaylee Vernon
Amber Brand
Gabriella Braden
Juliana Edmond
Sasha Brunson
Serenity Dow
Serenity Fenton
Anastasia Alford
Cassidy Andrews
Riley Moser
Alina Orourke
Jade Barrios
Phoebe Rocha
Makayla Matson
Vanessa Higginbotham
Hayden Lin
Nayeli Eastman
Georgia Pierce
Camila Schmitt