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).
Donovan
Donovan has been slowly declining from its former popularity. All-time it's been given to 77,901 U.S. babies, the 850th most common name by sound today, peaking at 2,775 in 2003, with 689 in 2025.
By sound, Donovan also includes the spellings Donavan, Donavon, Donavin.
Rising