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).
Harlan
Harlan has been climbing in recent years. All-time it's been given to 30,500 U.S. babies, the 1,020th most common name by sound today, peaking at 569 in 1924, with 560 in 2025.
By sound, Harlan also includes the spellings Harlen.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).