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).
Sariah has been climbing in recent years. All-time it's been given to 22,986 U.S. babies, the 662nd most common name by sound today, peaking at 1,052 in 2025, with 1,052 in 2025.
By sound, Sariah also includes the spellings Soraya, Sariyah, Siriah.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).