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).
Jamir has been climbing in recent years. All-time it's been given to 13,049 U.S. babies, the 759th most common name by sound today, peaking at 869 in 2023, with 861 in 2025.
By sound, Jamir also includes the spellings Jahmir.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).