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).
Alaia has been climbing in recent years. All-time it's been given to 51,917 U.S. babies, the 163rd most common name by sound today, peaking at 4,791 in 2020, with 4,365 in 2025.
By sound, Alaia also includes the spellings Alayah, Alaya, Aleigha, Aleia, Aleyah.