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).
Amir has been climbing in recent years. All-time it's been given to 72,292 U.S. babies, the 154th most common name by sound today, peaking at 4,643 in 2024, with 4,250 in 2025.
By sound, Amir also includes the spellings Ameer, Emir, Ahmir.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).