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).
Leonard
Leonard is now well below its former popularity. All-time it's been given to 305,750 U.S. babies, the 1,186th most common name by sound today, peaking at 5,859 in 1921, with 443 in 2025.
By sound, Leonard also includes the spellings Lenard.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).