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).
Griffin
Griffin has climbed over the years and is holding near its high. All-time it's been given to 51,809 U.S. babies, the 466th most common name by sound today, peaking at 1,750 in 2023, with 1,648 in 2025.
Griffin has no common alternate spellings by sound.
Rising