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 been climbing in recent years. All-time it's been given to 27,290 U.S. babies, the 740th most common name by sound today, peaking at 928 in 2025, with 928 in 2025.
Viviana has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).