Ryker sits next to 4 phonetic neighbors — Riker, Riley, and Ryan are the closest matches by sound. Most share Ryker's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"rich, powerful"
"divine one"
"the sky, the heavens"
"noble"
"she is my delight, pleasant"
"object of wonder, divine sign"
"little Sarah"
"diminutive of Cornelia (horn, strength)"
"silver"
"God is gracious"
"noble, of noble birth"
"from the city of Venice; the Veneti people"
"bringer of victory"
"from Wales, land of the Cymry"
"rock, cliff, foundation"
"that which has been firmly established"
"feminine form of Leander (lion man)"
"beloved beautiful one"
"star"
"of the wood, tree-born"
"stream or lake"
Similar sound: These names share phonetic patterns with Ryker — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Dutch/Germanic origins, giving them the same cultural heritage as Ryker.
Rhythm: Ryker is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.