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).
Miriam
Miriam is now well below its former popularity. All-time it's been given to 121,350 U.S. babies, the 549th most common name by sound today, peaking at 1,842 in 1924, with 1,289 in 2025.
By sound, Miriam also includes the spellings Myriam.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).