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).
Kylan
Kylan has been climbing in recent years. All-time it's been given to 20,694 U.S. babies, the 647th most common name by sound today, peaking at 1,083 in 2022, with 963 in 2025.
By sound, Kylan also includes the spellings Kylen, Kylin.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).