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).
Quentin
Quentin is now well below its former popularity. All-time it's been given to 46,868 U.S. babies, the 1,320th most common name by sound today, peaking at 1,131 in 1998, with 249 in 2025.
By sound, Quentin also includes the spellings Quenton.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).