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).
Dean
Dean has been climbing back after years of decline. All-time it's been given to 199,906 U.S. babies, the 300th most common name by sound today, peaking at 5,012 in 1961, with 2,888 in 2025.
By sound, Dean also includes the spellings Deane.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).