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).
Hunter has dropped sharply from its peak but is still widely used. All-time it's been given to 276,622 U.S. babies, the 220th most common name by sound today, peaking at 13,252 in 2000, with 3,084 in 2025.
Hunter has no common alternate spellings by sound.