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).
Fernando
Fernando is now well below its former popularity. All-time it's been given to 103,729 U.S. babies, the 694th most common name by sound today, peaking at 2,765 in 2006, with 819 in 2025.
Fernando has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).