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).
Maddox
Maddox is now well below its former popularity. All-time it's been given to 53,042 U.S. babies, the 377th most common name by sound today, peaking at 3,380 in 2017, with 1,853 in 2025.
By sound, Maddox also includes the spellings Maddux.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).