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).
Lois
Lois was more common in the past and has since settled at a lower, steady level. All-time it's been given to 335,594 U.S. babies, the 2,178th most common name by sound today, peaking at 10,587 in 1927, with 124 in 2025.
Lois has no common alternate spellings by sound.
Rising