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).
Malaya climbed for decades and has been a steadily popular name ever since. All-time it's been given to 12,834 U.S. babies, the 923rd most common name by sound today, peaking at 754 in 2021, with 574 in 2025.
By sound, Malaya also includes the spellings Malayah.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).