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).
Nicole
Nicole is now well below its former popularity. All-time it's been given to 673,478 U.S. babies, the 638th most common name by sound today, peaking at 26,332 in 1985, with 932 in 2025.
By sound, Nicole also includes the spellings Nichole, Nikole, Nicolle.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).