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).
Kellen
Kellen has been slowly declining from its former popularity. All-time it's been given to 29,576 U.S. babies, the 1,055th most common name by sound today, peaking at 1,784 in 2012, with 430 in 2025.
By sound, Kellen also includes the spellings Kellan.
Rising