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).
Grayson climbed for decades and has been a steadily popular name ever since. All-time it's been given to 210,353 U.S. babies, the 24th most common name by sound today, peaking at 14,637 in 2017, with 8,685 in 2025.
By sound, Grayson also includes the spellings Greyson, Graysen, Gracyn, Gracen, Greysen.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).