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]

Trinity Bagley
Keira Hood
Bella Kang
Nancy Morris
Evelyn Dawson
Reese Cook
Sarah Olivares
Avery Metzger
Caroline Ridgeway
Katie Hurt
Adeline Emmons
Alana Hodge
Janiya Churchill
Cassandra Asher
Sophie Parris
Lizbeth Sommers
Serena Moseley
Maya Drummond
Chelsea Fitch
Piper Stockton
Kira Cabral
Brooke Romo
Giselle Knapp
Valeria Xiong
Jazlyn Weston
Sierra Mckinney
Rebecca Lytle
Janiyah May
Mikayla Leary
Ariel Bruno
Lilly Ogden
Kayleigh Snider
Sara Novak
Melanie Boston
Isabella Asher
Anna Poirier
Sienna Gooch
Camila Curley
Marley Harry
Riley Lewis
Makayla Hurt
Laura Pressley
Isabel Courtney
Amy Varela
Riley Kent
Genesis Langford
Kira Fortune
Lila Roth
Autumn Webber
Amelia Ward