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).
Oaklynn has been climbing in recent years. All-time it's been given to 17,263 U.S. babies, the 312th most common name by sound today, peaking at 2,490 in 2022, with 2,452 in 2025.
By sound, Oaklynn also includes the spellings Oaklyn.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).