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).
Zaire
Zaire has been climbing in recent years. All-time it's been given to 10,897 U.S. babies, the 905th most common name by sound today, peaking at 674 in 2023, with 608 in 2025.
Zaire has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).