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).
Connor is down from its peak but still widely used. All-time it's been given to 332,649 U.S. babies, the 203rd most common name by sound today, peaking at 14,207 in 2004, with 2,897 in 2025.
By sound, Connor also includes the spellings Conner, Conor, Konnor, Konner.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).