Ryan sits next to 3 phonetic neighbors — Brian, Flynn, and Ryne are the closest matches by sound. Most share Ryan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"little king"
"soldier"
"son of Madoc"
"little seal"
"belonging to Julius"
"Scottish form of John, gift of God"
"descending"
"from Lucania"
"young warrior"
"from Lucania (ancient region of Italy)"
"conqueror, winner"
"gift of God"
"fine, lovely"
"companion, friend, from Arabic Kadin"
"whole, universal power"
"twin, double"
"From the Middle English 'couper' or Middle Low German 'kuper'; an o..."
"follower of Christ; anointed one"
"Little fire; born of fire"
"large, great"
Similar sound: These names share phonetic patterns with Ryan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic (O'Riain) origins, giving them the same cultural heritage as Ryan.
Rhythm: Ryan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.