Eredin sits next to 4 phonetic neighbors — Brendan, Aiden, and Eridan are the closest matches by sound. Most share Eredin's Fantasy-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fictional villain name from The Witcher"
"freedom, rights document"
"earnest effort, striving"
"bearer of Christ"
"possibly derived from jet (black gemstone) or speed"
"descendant, heritage"
"My God is He"
"creative combination"
"winding stream, crooked well"
"iron, strength"
"modern American coinage, unique creation"
"one who grows, rises, flourishes"
"bright one, sunlit"
"From the boar meadow; ever-lasting meadow"
Similar sound: These names share phonetic patterns with Eredin — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Fantasy origins, giving them the same cultural heritage as Eredin.
Rhythm: Eredin is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.