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).
Wayne was more common in the past and has since settled at a lower, steady level. All-time it's been given to 356,422 U.S. babies, the 1,276th most common name by sound today, peaking at 10,202 in 1947, with 422 in 2025.
Wayne has no common alternate spellings by sound.