The name reached its all-time peak in 2022 with 50 births ranking #3262. STABLE Recent data shows the name is currently stable.
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.