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).
Morgan
Morgan was more common in the past and has since settled at a lower, steady level. All-time it's been given to 271,723 U.S. babies, the 438th most common name by sound today, peaking at 12,223 in 1995, with 1,515 in 2025.
By sound, Morgan also includes the spellings Morgen.
Rising