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).
Blair
Blair has been climbing in recent years. All-time it's been given to 46,346 U.S. babies, the 365th most common name by sound today, peaking at 2,685 in 2025, with 2,685 in 2025.
By sound, Blair also includes the spellings Blaire.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).