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).
Gabrielle
Gabrielle is now well below its former popularity. All-time it's been given to 139,579 U.S. babies, the 984th most common name by sound today, peaking at 6,221 in 1998, with 471 in 2025.
Gabrielle has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).