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).
Joanne
Joanne is now well below its former popularity. All-time it's been given to 369,930 U.S. babies, the 2,033rd most common name by sound today, peaking at 10,356 in 1947, with 120 in 2025.
By sound, Joanne also includes the spellings Joann.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).