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).
Olive
Olive has been climbing back after years of decline. All-time it's been given to 67,320 U.S. babies, the 438th most common name by sound today, peaking at 1,841 in 2022, with 1,604 in 2025.
Olive has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).