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).
Ava is down from its peak but still widely used. All-time it's been given to 355,310 U.S. babies, the 29th most common name by sound today, peaking at 18,437 in 2007, with 7,961 in 2025.
By sound, Ava also includes the spellings Avah, Ayva.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).