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).
Ralph
Ralph is now well below its former popularity. All-time it's been given to 415,858 U.S. babies, the 1,780th most common name by sound today, peaking at 8,902 in 1921, with 211 in 2025.
Ralph has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).