Jean was a Top 100 American baby girl name between 1906 and 1964
The popularity of Jayne with a “Y” spiked in the late 1950s (USA) but it was still not half as popular as plain Jane
Jude returned to the USA’s Top 1000 name list in 1999 at No. 948. By 2010, it rose to No. 170
Judd has never been highly popular in the USA. Its highest rank was in 1970 at No. 652, when 158 Judds were recorded. Judson ranked even lower at No. 665
Always a Top 25 American baby boy name, Joseph fell to a 130 year low in 2010 at No. 20
12 American baby boys were named Joram in 2013, making it just as popular as Leonidas and Octavion
Jonathan became a Top 50 American baby boy name in 1969. In 2010, it was No. 28
Jonas was the 4th most popular boy’s name in German-speaking Switzerland in 2010 and the 7th most popular in Norway