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).
Cameron was more common in the past and has since settled at a lower, steady level. All-time it's been given to 500,391 U.S. babies, the 46th most common name by sound today, peaking at 20,501 in 1999, with 7,438 in 2025.
By sound, Cameron also includes the spellings Kameron, Camryn, Kamryn, Camron, Kamron, Camren, Kamren, Cameryn, Kameryn, Kamran, Cameran.