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).
Jaycee
Jaycee is now well below its former popularity. All-time it's been given to 33,697 U.S. babies, the 969th most common name by sound today, peaking at 1,298 in 2008, with 485 in 2025.
By sound, Jaycee also includes the spellings Jacey, Jacie, Jacy, Jaycie.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).