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).
Justin
Justin is now well below its former popularity. All-time it's been given to 802,884 U.S. babies, the 414th most common name by sound today, peaking at 35,574 in 1988, with 1,547 in 2025.
By sound, Justin also includes the spellings Justyn, Justen.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).