Eren sits next to 4 phonetic neighbors — Aaron, Erin, and Aren are the closest matches by sound. Most share Eren's Turkish/Sufi tradition-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"saint, holy man, sage"
"praiseworthy, highly commended"
"lion"
"may God give increase"
"founder, builder (cultural meaning)"
"God is gracious"
"the pure and selected"
"savior (indirect meaning)"
"da + mir (to give + peace)"
"universe, cosmos"
Similar sound: These names share phonetic patterns with Eren — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Turkish/Sufi tradition origins, giving them the same cultural heritage as Eren.
Rhythm: Eren is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.