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 has stayed fairly steady in American naming for generations. All-time it's been given to 12,834 U.S. babies, the 937th most common name by sound today, peaking at 754 in 2021, with 574 in 2025.
By sound, Malaya also includes the spellings Malayah. Spellings sometimes heard the same way: Malea.