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).
Patrick has been slowly declining from its former popularity. All-time it's been given to 692,537 U.S. babies, the 477th most common name by sound today, peaking at 14,788 in 1964, with 1,495 in 2025.
By sound, Patrick also includes the spellings Patric.