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).
Dorothy
Dorothy has been climbing in recent years. All-time it's been given to 1,136,325 U.S. babies, the 853rd most common name by sound today, peaking at 40,705 in 1924, with 751 in 2025.
By sound, Dorothy also includes the spellings Dorthy.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).