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).
Mason
Mason is down from its peak but still widely used. All-time it's been given to 360,695 U.S. babies, the 63rd most common name by sound today, peaking at 20,386 in 2011, with 6,699 in 2025.
By sound, Mason also includes the spellings Mayson, Maison, Masen.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).