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).
Ryker
Ryker has held a fairly steady level of use. All-time it's been given to 41,784 U.S. babies, the 375th most common name by sound today, peaking at 3,290 in 2018, with 2,036 in 2025.
Ryker has no common alternate spellings by sound.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).