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).
Killian
Killian has been climbing in recent years. All-time it's been given to 27,391 U.S. babies, the 353rd most common name by sound today, peaking at 2,535 in 2023, with 2,005 in 2025.
By sound, Killian also includes the spellings Cillian, Kylian, Kilian.
Rising