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).
Phoenix
Phoenix was more common in the past and has since settled at a lower, steady level. All-time it's been given to 40,635 U.S. babies, the 392nd most common name by sound today, peaking at 2,650 in 2020, with 1,594 in 2025.
Phoenix has no common alternate spellings by sound.
Rising