Gene was a Top 100 American baby boy name between 1926 and 1946
Gaylord cracked the Top 500 American male names in 3 years: 1931 (No. 438), 1932 (No. 491) and 1942 (No. 494).
Gavin entered the Top 100 American male names in 2000, peaking at No. 30 in 2008. It was No. 49 in 2013
15 Gastons in 2010 were not enough for it to make the Top 1000 popular American male names; but 17 Gastons in 1903 were enough for it to rank No. 534 that year
Gary was a Top 100 American male name between 1933 and 1988, when it ranked No. 100. Its highest rank was in 1953 (No. 9)
Garrick first appeared in the Top 1000 American baby boy names in 1967 (No. 864). Its highest rank was in 1973 at No. 511