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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).
Adalynn
Adalynn is down from its peak but still widely used. All-time it's been given to 127,298 U.S. babies, the 97th most common name by sound today, peaking at 10,083 in 2015, with 5,066 in 2025.
By sound, Adalynn also includes the spellings Adalyn, Adelyn, Adelynn, Addilyn, Addilynn, Adilynn, Addalyn, Addelyn. Spellings sometimes heard the same way: Adeline.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).