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).
Amber
Amber is now well below its former popularity. All-time it's been given to 378,699 U.S. babies, the 894th most common name by sound today, peaking at 17,061 in 1986, with 684 in 2025.
By sound, Amber also includes the spellings Ambar.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).