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).
Kyler
Kyler has stayed fairly steady in American naming for generations. All-time it's been given to 44,460 U.S. babies, the 592nd most common name by sound today, peaking at 1,881 in 2019, with 886 in 2025.
By sound, Kyler also includes the spellings Kylar.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).