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).
Aaliyah has been easing down from its peak but is still widely used. All-time it's been given to 207,924 U.S. babies, the 119th most common name by sound today, peaking at 9,604 in 2012, with 4,963 in 2025.
By sound, Aaliyah also includes the spellings Aliyah, Aleah, Alia, Aliya, Alea, Alliyah. Spellings sometimes heard the same way: Aliah, Aleia, Alya.