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).
Emilio has been climbing in recent years. All-time it's been given to 54,013 U.S. babies, the 361st most common name by sound today, peaking at 2,397 in 2025, with 2,397 in 2025.
Emilio has no common alternate spellings by sound.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).