How to read the band →
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).
Logan
Logan has dropped sharply from its peak but is still widely used. All-time it's been given to 419,837 U.S. babies, the 66th most common name by sound today, peaking at 16,039 in 2007, with 6,351 in 2025.
Logan has no common alternate spellings by sound.
Rising