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).
Clementine has been climbing in recent years. All-time it's been given to 13,676 U.S. babies, the 934th most common name by sound today, peaking at 676 in 2025, with 676 in 2025.
Clementine has no common alternate spellings by sound.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).