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).
Margo
Margo has been climbing in recent years. All-time it's been given to 56,899 U.S. babies, the 269th most common name by sound today, peaking at 3,306 in 2025, with 3,306 in 2025.
By sound, Margo also includes the spellings Margot, Margaux.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).