Make of this what you will, here are names from the top 100 names in England and Wales in 2013 that do not appear in the US top 500 list of names in 2013.
Boys:
Harry, Alfie, Archie, Mohammed, Freddie, Theo, Toby, Lewis, Harvey, Harley, Tommy, Reuben, Mohammad, Jenson, Bobby, Frankie, Jamie, Stanley, Louie, Callum, Ollie, Teddy, Finlay, Ronnie, Kian, Sonny
Girls:
Poppy, Evie, Freya, Millie, Florence, Imogen, Matilda, Rosie, Maisie, Amelie, Esme, Harriet, Mollie, Martha, Hollie, Maryam, Darcey, Tilly, Isobel, Niamh, Darcy, Aisha, Beatrice