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).
Josie has been climbing back after years of decline. All-time it's been given to 80,163 U.S. babies, the 267th most common name by sound today, peaking at 3,113 in 2025, with 3,113 in 2025.
By sound, Josie also includes the spellings Josey.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).