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).
Rhea
Rhea has been climbing in recent years. All-time it's been given to 30,533 U.S. babies, the 803rd most common name by sound today, peaking at 895 in 2023, with 667 in 2025.
By sound, Rhea also includes the spellings Riya, Ria.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).