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).
Jayla is now well below its former popularity. All-time it's been given to 57,144 U.S. babies, the 656th most common name by sound today, peaking at 3,710 in 2006, with 738 in 2025.
By sound, Jayla also includes the spellings Jaylah.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).