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).
Wanda
Wanda was a common American name in the 1950s but is rarely given today. It's been given to 282,186 U.S. babies all time and once ranked 484th by sound, peaking at 7,735 in 1957 (down to 20 in 2025).
Wanda has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).