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).
Dion
Dion was more common in the past and has since settled at a lower, steady level. All-time it's been given to 56,569 U.S. babies, the 1,093rd most common name by sound today, peaking at 1,976 in 1970, with 414 in 2025.
By sound, Dion also includes the spellings Deon, Dionne, Deion, Dione.
Rising