The name reached its all-time peak in 2021 with 48 births ranking #719. FALLING Recent data shows the name is currently falling.
Ryker is a modern English name that Behind the Name links, probably, to the German surname Riker. Through that route it is associated with Low German rike, meaning "rich".
The modern appeal of Ryker also comes from its sound, which fits neatly with names such as Ryder and Ryan. That makes it part surname name, part contemporary style name.