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).
Connie
Connie was a common American name in the 1950s but is rarely given today. It's been given to 273,740 U.S. babies all time and once ranked 423rd by sound, peaking at 10,112 in 1955 (down to 53 in 2025).
Connie has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).