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).
Albert
Albert is now well below its former popularity. All-time it's been given to 494,420 U.S. babies, the 1,096th most common name by sound today, peaking at 10,204 in 1921, with 461 in 2025.
Albert has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).