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).
Jimena climbed for decades and has been a steadily popular name ever since. All-time it's been given to 17,042 U.S. babies, the 947th most common name by sound today, peaking at 830 in 2016, with 515 in 2025.
Jimena has no common alternate spellings by sound.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).