Ryen sits next to 4 phonetic neighbors — Ryan, Rion, and Ryn are the closest matches by sound. Most share Ryen's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"little king, kingly"
"of Mars, warlike"
"purple-red, royal color"
"from the Liffey valley"
"variant of Amal, meaning work or action"
"one who mows or cuts"
"from Sebaste (via Sebastian)"
"sharp, intelligent"
"son of Kyle"
"moonlit, luminous"
"spear, metalsmith"
"modern invented form of Jackson"
"wolf cub"
"dark-haired chieftain"
"broad stone settlement"
"invented modern name"
"powerful ruler; God is gracious"
"brave traveler"
"divine flame, light of the Lord"
"crowned with laurel, laurel bearer"
Similar sound: These names share phonetic patterns with Ryen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic Rian origins, giving them the same cultural heritage as Ryen.
Rhythm: Ryen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.