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).
Theodore
Theodore is one of the fastest-rising names in America right now — a comeback after years of decline. All-time it's been given to 322,180 U.S. babies, the 16th most common name by sound today, peaking at 13,367 in 2025, with 13,367 in 2025.
By sound, Theodore also includes the spellings Theadore.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).