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).
Malia has stayed fairly steady in American naming for generations. All-time it's been given to 63,297 U.S. babies, the 392nd most common name by sound today, peaking at 3,727 in 2009, with 1,659 in 2025.
By sound, Malia also includes the spellings Maliyah, Maleah, Maliah, Meleah.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).