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 74,989 U.S. babies, the 153rd most common name by sound today, peaking at 4,725 in 2024, with 4,323 in 2025.
By sound, Amir also includes the spellings Ameer, Emir, Ahmir, Aamir.