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).
Mathias
Mathias has been climbing in recent years. All-time it's been given to 29,220 U.S. babies, the 464th most common name by sound today, at an all-time high of 1,941 in 2025.
By sound, Mathias also includes the spellings Matthias.
Rising