Going with the 100 year cycle here. So probably names that were popular in around 1950.
I feel like these have the potential to make comebacks:
James,
Robert,
John,
Michael,
David,
William,
Richard,
Thomas,
Charles,
Gary,
Joseph,
Kenneth,
Steven,
Stephen,
Dennis,
Paul,
George,
Daniel,
Edward,
Marc,
Mark,
Jerry,
Gregory,
Bruce,
Roger,
Douglas,
Frank,
Terry,
Raymond,
Gerald,
Peter,
Patrick,
Alan,
Lawrence,
Anthony,
Arthur,
Henry,
Jack,
Jeffrey,
Carl,
Karl,
Dale,
Harold.
*
Jack and
Henry might skip their comeback, because they are popular now again so will probably sound dated in 2050.
Linda,
Mary,
Patricia,
Barbara,
Susan,
Nancy,
Deborah,
Debra,
Debbie,
Sandra,
Carol,
Kathleen,
Kathy,
Cathy,
Sharon,
Donna,
Brenda,
Margaret,
Diane,
Pamela,
Janet,
Shirley,
Carolyn,
Judith,
Judy,
Janice,
Cynthia,
Betty,
Joyce,
Christine,
Cheryl,
Beverly,
Martha,
Gloria,
Dorothy,
Bonnie,
Katherine,
Kathryn and
Catherine with
Kathy,
Cathy as the nickname,
Jane,
Marilyn,
Connie.
Then there will be some new ones. I guess:
Otto,
Koa.
Ottilie,
Meadow,
Sunny,
Calliope.