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).
Grey
Grey climbed for decades and has been a steadily popular name ever since. All-time it's been given to 12,950 U.S. babies, the 1,043rd most common name by sound today, peaking at 656 in 2021, with 403 in 2025.
By sound, Grey also includes the spellings Gray.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).