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).
Waylon
Waylon has been climbing in recent years. All-time it's been given to 55,338 U.S. babies, the 132nd most common name by sound today, peaking at 5,425 in 2025, with 5,425 in 2025.
Waylon has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).