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).
Brooks
Brooks has been climbing in recent years. All-time it's been given to 59,639 U.S. babies, the 143rd most common name by sound today, peaking at 4,965 in 2025, with 4,965 in 2025.
Brooks has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).