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).
Jimmy
Jimmy is now well below its former popularity. All-time it's been given to 426,551 U.S. babies, the 1,324th most common name by sound today, peaking at 10,962 in 1947, with 326 in 2025.
By sound, Jimmy also includes the spellings Jimmie, Jimmi.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).