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).
Ivanna
Ivanna has stayed fairly steady in American naming for generations. All-time it's been given to 18,286 U.S. babies, the 824th most common name by sound today, peaking at 771 in 2024, with 747 in 2025.
By sound, Ivanna also includes the spellings Ivana.
Rising