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).
Fatima climbed for decades and has been a steadily popular name ever since. All-time it's been given to 42,691 U.S. babies, the 648th most common name by sound today, peaking at 1,589 in 2007, with 1,022 in 2025.
By sound, Fatima also includes the spellings Fatimah.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).