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).
Leland
Leland has stayed fairly steady in American naming for generations. All-time it's been given to 61,865 U.S. babies, the 850th most common name by sound today, peaking at 1,149 in 2007, with 720 in 2025.
By sound, Leland also includes the spellings Leeland.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).