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).
Hassan
Hassan climbed for decades and has been a steadily popular name ever since. All-time it's been given to 17,705 U.S. babies, the 965th most common name by sound today, peaking at 631 in 2025, with 631 in 2025.
By sound, Hassan also includes the spellings Hasan.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).