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).
Yusuf
Yusuf climbed for decades and has been a steadily popular name ever since. All-time it's been given to 25,284 U.S. babies, the 611th most common name by sound today, peaking at 1,240 in 2025, with 1,240 in 2025.
By sound, Yusuf also includes the spellings Yousef, Youssef, Yusef.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).