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).
Shannon
Shannon was more common in the past and has since settled at a lower, steady level. All-time it's been given to 360,189 U.S. babies, the 2,068th most common name by sound today, peaking at 16,797 in 1970, with 116 in 2025.
By sound, Shannon also includes the spellings Shanon, Shannan.
Rising