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).
Sebastian
Sebastian has climbed over the years and is holding near its high. All-time it's been given to 226,191 U.S. babies, the 33rd most common name by sound today, peaking at 10,524 in 2016, with 8,703 in 2025.
By sound, Sebastian also includes the spellings Sebastien, Sabastian.
Rising