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).
Wilder has been climbing in recent years. All-time it's been given to 11,595 U.S. babies, the 564th most common name by sound today, peaking at 1,318 in 2024, with 1,234 in 2025.
By sound, Wilder also includes the spellings Wylder.