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).
Fabian
Fabian is now well below its former popularity. All-time it's been given to 44,663 U.S. babies, the 876th most common name by sound today, peaking at 1,403 in 2007, with 655 in 2025.
By sound, Fabian also includes the spellings Fabyan.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).