How to read the band →
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).
Muhammad
Muhammad has been climbing in recent years. All-time it's been given to 21,962 U.S. babies, the 537th most common name by sound today, peaking at 1,473 in 2025, with 1,473 in 2025.
Muhammad has no common alternate spellings by sound. Spellings sometimes heard the same way: Mohamed, Mohammed.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).