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).
Wilder
Wilder has been climbing in recent years. All-time it's been given to 8,835 U.S. babies, the 743rd most common name by sound today, peaking at 978 in 2021, with 786 in 2025.
Wilder has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).