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).
Aviana
Aviana has held a fairly steady level of use. All-time it's been given to 8,863 U.S. babies, the 1,271st most common name by sound today, peaking at 845 in 2016, with 301 in 2025.
Aviana has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).