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).
Myla has been climbing in recent years. All-time it's been given to 28,678 U.S. babies, the 352nd most common name by sound today, peaking at 2,435 in 2023, with 1,922 in 2025.
By sound, Myla also includes the spellings Mylah.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).