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).
Aurora is one of the fastest-rising names in America right now. All-time it's been given to 99,214 U.S. babies, the 86th most common name by sound today, peaking at 7,070 in 2025, with 7,070 in 2025.
By sound, Aurora also includes the spellings Arorah.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).