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).
Hallie
Hallie has been climbing in recent years. All-time it's been given to 67,255 U.S. babies, the 332nd most common name by sound today, peaking at 2,819 in 2025, with 2,819 in 2025.
By sound, Hallie also includes the spellings Halle, Hali, Halley.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).