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).
Francisco
Francisco is now well below its former popularity. All-time it's been given to 146,211 U.S. babies, the 610th most common name by sound today, peaking at 3,051 in 1993, with 1,078 in 2025.
By sound, Francisco also includes the spellings Fransisco.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).