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).
Kyla
Kyla is now well below its former popularity. All-time it's been given to 49,984 U.S. babies, the 864th most common name by sound today, peaking at 2,247 in 2003, with 638 in 2025.
By sound, Kyla also includes the spellings Kylah.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).