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).
Tyler has fallen well below its former popularity. All-time it's been given to 633,004 U.S. babies, the 378th most common name by sound today, peaking at 32,275 in 1994, with 1,761 in 2025.
By sound, Tyler also includes the spellings Tylor, Tylar.