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).
Frances
Frances has been climbing back after years of decline. All-time it's been given to 921,043 U.S. babies, the 465th most common name by sound today, peaking at 23,229 in 1918, with 1,857 in 2025.
By sound, Frances also includes the spellings Francis.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).