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).
Avianna
Avianna has held a fairly steady level of use. All-time it's been given to 9,677 U.S. babies, the 959th most common name by sound today, peaking at 881 in 2021, with 491 in 2025.
Avianna has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).