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).
Hector
Hector is now well below its former popularity. All-time it's been given to 109,209 U.S. babies, the 750th most common name by sound today, peaking at 2,458 in 2005, with 779 in 2025.
Hector has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).