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).
Ashley is now well below its former popularity. All-time it's been given to 989,303 U.S. babies, the 337th most common name by sound today, peaking at 61,135 in 1987, with 2,107 in 2025.
By sound, Ashley also includes the spellings Ashlee, Ashleigh, Ashly, Ashlie, Ashely, Ashli, Ashlea.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).