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).
Valentino has been climbing in recent years. All-time it's been given to 11,784 U.S. babies, the 907th most common name by sound today, peaking at 710 in 2025, with 710 in 2025.
Valentino has no common alternate spellings by sound.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).