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).
Viviana
Viviana has stayed fairly steady in American naming for generations. All-time it's been given to 27,290 U.S. babies, the 748th most common name by sound today, at an all-time high of 928 in 2025.
Viviana has no common alternate spellings by sound. Spellings sometimes heard the same way: Vivianna.
Rising