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).
Armando is now well below its former popularity. All-time it's been given to 76,887 U.S. babies, the 1,018th most common name by sound today, peaking at 1,512 in 1997, with 538 in 2025.
Armando has no common alternate spellings by sound.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).