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).
Alexandria
Alexandria is now well below its former popularity. All-time it's been given to 104,778 U.S. babies, the 838th most common name by sound today, peaking at 5,042 in 1993, with 647 in 2025.
Alexandria has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).