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).
Hamza
Hamza has held a fairly steady level of use. All-time it's been given to 10,573 U.S. babies, the 1,033rd most common name by sound today, peaking at 565 in 2024, with 556 in 2025.
Hamza has no common alternate spellings by sound.
Rising