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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).
Jocelyn
Jocelyn has fallen well below its former popularity. All-time it's been given to 174,091 U.S. babies, the 510th most common name by sound today, peaking at 9,140 in 2007, with 1,227 in 2025.
By sound, Jocelyn also includes the spellings Joselyn, Joslyn, Jocelynn, Jocelyne, Joselin, Joseline, Josselyn, Joslynn, Jacelyn, Jocelin.
Rising