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).
Ronan
Ronan has been climbing in recent years. All-time it's been given to 31,432 U.S. babies, the 388th most common name by sound today, peaking at 2,103 in 2022, with 2,045 in 2025.
By sound, Ronan also includes the spellings Ronin.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).