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).
Barbara
Barbara is now well below its former popularity. All-time it's been given to 1,448,589 U.S. babies, the 1,446th most common name by sound today, peaking at 49,013 in 1947, with 264 in 2025.
By sound, Barbara also includes the spellings Barbra.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).