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).
Harry was more common in the past and has since settled at a lower, steady level. All-time it's been given to 425,883 U.S. babies, the 1,349th most common name by sound today, peaking at 9,938 in 1918, with 329 in 2025.
Harry has no common alternate spellings by sound.