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).
Valeria
Valeria has stayed fairly steady in American naming for generations. All-time it's been given to 80,157 U.S. babies, the 406th most common name by sound today, peaking at 4,212 in 2008, with 1,835 in 2025.
Valeria has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).