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).
Amina climbed for decades and has been a steadily popular name ever since. All-time it's been given to 25,802 U.S. babies, the 563rd most common name by sound today, peaking at 1,523 in 2017, with 1,183 in 2025.
By sound, Amina also includes the spellings Aminah, Ameenah.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).