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).
Mary
Mary is now well below its former popularity. All-time it's been given to 4,186,838 U.S. babies, the 330th most common name by sound today, peaking at 74,248 in 1921, with 2,374 in 2025.
By sound, Mary also includes the spellings Mari, Merry, Merri.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).