How to read the band →
Solid line = floor (spellings that unambiguously belong to the group). Shaded band up to the dashed edge = ceiling (the most it could reach if every ambiguous spelling counted here).
Jameson
Jameson climbed for decades and has been a steadily popular name ever since. All-time it's been given to 85,831 U.S. babies, the 196th most common name by sound today, peaking at 5,447 in 2019, with 2,966 in 2025.
By sound, Jameson also includes the spellings Jamison.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).