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).
Cecelia
Cecelia has stayed fairly steady in American naming for generations. All-time it's been given to 60,530 U.S. babies, the 965th most common name by sound today, peaking at 935 in 1918, with 569 in 2025.
Cecelia has no common alternate spellings by sound.
Rising