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).
Benjamin
Benjamin has stayed fairly steady in American naming for generations. All-time it's been given to 837,306 U.S. babies, the 22nd most common name by sound today, peaking at 15,920 in 1989, with 9,788 in 2025.
By sound, Benjamin also includes the spellings Benjiman, Benjamen.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).