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).
Norman
Norman is now well below its former popularity. All-time it's been given to 254,762 U.S. babies, the 1,912th most common name by sound today, peaking at 5,637 in 1928, with 169 in 2025.
Norman has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).