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).
Kyson
Kyson has held a fairly steady level of use. All-time it's been given to 12,598 U.S. babies, the 701st most common name by sound today, peaking at 999 in 2023, with 959 in 2025.
By sound, Kyson also includes the spellings Kaisen.
Rising