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).
Drew is now well below its former popularity. All-time it's been given to 92,739 U.S. babies, the 639th most common name by sound today, peaking at 2,533 in 1995, with 1,040 in 2025.
By sound, Drew also includes the spellings Dru.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).