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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).
Melissa
Melissa is now well below its former popularity. All-time it's been given to 803,813 U.S. babies, the 755th most common name by sound today, peaking at 35,736 in 1979, with 812 in 2025.
By sound, Melissa also includes the spellings Melisa, Malissa, Mellissa, Mellisa, Milissa.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).