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).
Braxton
Braxton is now well below its former popularity. All-time it's been given to 66,654 U.S. babies, the 350th most common name by sound today, peaking at 3,394 in 2014, with 2,136 in 2025.
Braxton has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).