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).
Harmony
Harmony has been slowly declining from its former popularity. All-time it's been given to 44,628 U.S. babies, the 469th most common name by sound today, peaking at 2,216 in 2019, with 1,447 in 2025.
By sound, Harmony also includes the spellings Harmoni, Harmonie.
Rising