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).
Jada has fallen well below its former popularity. All-time it's been given to 101,267 U.S. babies, the 976th most common name by sound today, peaking at 5,950 in 2005, with 438 in 2025.
By sound, Jada also includes the spellings Jayda, Jaida, Jaeda.