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).
Earl
Earl was a common American name in the 1920s but is rarely given today. It's been given to 303,211 U.S. babies all time and once ranked 344th by sound, peaking at 7,140 in 1921 (down to 63 in 2025).
By sound, Earl also includes the spellings Earle.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).