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).
Genevieve is now well below its former popularity. All-time it's been given to 125,282 U.S. babies, the 418th most common name by sound today, peaking at 3,313 in 1918, with 1,981 in 2025.
Genevieve has no common alternate spellings by sound.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).