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).
Adam
Adam is down from its peak but still widely used. All-time it's been given to 582,453 U.S. babies, the 211th most common name by sound today, peaking at 24,081 in 1984, with 3,511 in 2025.
Adam has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).