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).
Thiago
Thiago has been climbing in recent years. All-time it's been given to 38,461 U.S. babies, the 135th most common name by sound today, peaking at 6,032 in 2025, with 6,032 in 2025.
By sound, Thiago also includes the spellings Tiago.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).