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).
Cruz
Cruz has stayed fairly steady in American naming for generations. All-time it's been given to 37,747 U.S. babies, the 568th most common name by sound today, peaking at 1,403 in 2013, with 1,207 in 2025.
By sound, Cruz also includes the spellings Kruz.
Rising