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).
Jazlyn
Jazlyn has held a fairly steady level of use. All-time it's been given to 34,599 U.S. babies, the 629th most common name by sound today, peaking at 1,753 in 2009, with 1,151 in 2025.
By sound, Jazlyn also includes the spellings Jazlynn, Jaslyn, Jazzlyn.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).