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, at an all-time high of 13,505 in 2025.
By sound, Luca also includes the spellings Luka, Lucca.
Rising