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).
Veronica is now well below its former popularity. All-time it's been given to 228,089 U.S. babies, the 780th most common name by sound today, peaking at 4,425 in 1980, with 773 in 2025.
By sound, Veronica also includes the spellings Veronika.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).