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).
Eva
Eva is now well below its former popularity. All-time it's been given to 286,550 U.S. babies, the 321st most common name by sound today, peaking at 4,585 in 1918, with 2,167 in 2025.
By sound, Eva also includes the spellings Evah. Spellings sometimes heard the same way: Iva.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).