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).
Joy
Joy is now well below its former popularity. All-time it's been given to 156,110 U.S. babies, the 747th most common name by sound today, peaking at 3,095 in 1957, with 889 in 2025.
By sound, Joy also includes the spellings Joi, Joye, Joie.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).