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).
Neil
Neil was more common in the past and has since settled at a lower, steady level. All-time it's been given to 163,951 U.S. babies, the 1,091st most common name by sound today, peaking at 3,059 in 1952, with 478 in 2025.
By sound, Neil also includes the spellings Neal, Neel.
Rising