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).
Eve has stayed fairly steady in American naming for generations. All-time it's been given to 29,510 U.S. babies, the 1,014th most common name by sound today, peaking at 732 in 2017, with 577 in 2025.
Eve has no common alternate spellings by sound.