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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).
Emmalyn
Emmalyn has been slowly declining from its former popularity. All-time it's been given to 16,410 U.S. babies, the 1,095th most common name by sound today, peaking at 1,209 in 2015, with 422 in 2025.
By sound, Emmalyn also includes the spellings Emmalynn, Emelyn.
Rising