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).
Xander
Xander has stayed fairly steady in American naming for generations. All-time it's been given to 69,135 U.S. babies, the 292nd most common name by sound today, peaking at 3,989 in 2017, with 2,139 in 2025.
By sound, Xander also includes the spellings Zander.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).