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).
Leona
Leona has been climbing in recent years. All-time it's been given to 113,624 U.S. babies, the 913th most common name by sound today, peaking at 3,346 in 1918, with 723 in 2025.
Leona has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).