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).
Luca
Luca is one of the fastest-rising names in America right now. All-time it's been given to 117,391 U.S. babies, the 10th most common name by sound today, peaking at 13,505 in 2025, with 13,505 in 2025.
By sound, Luca also includes the spellings Luka, Lucca.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).