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).
Bryson has dropped sharply from its peak but is still widely used. All-time it's been given to 101,223 U.S. babies, the 260th most common name by sound today, peaking at 5,554 in 2017, with 2,755 in 2025.
By sound, Bryson also includes the spellings Brycen, Brysen.