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).
Naomi has been climbing back after years of decline. All-time it's been given to 191,837 U.S. babies, the 151st most common name by sound today, at an all-time high of 4,649 in 2025.
Naomi has no common alternate spellings by sound.