Eldin sits next to 5 phonetic neighbors — Elton, Edwin, and Aldin are the closest matches by sound. Most share Eldin's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"noble friend, old friend"
"modern invented name"
"God is gracious (via Scandinavian John-family)"
"One who drives; hunter"
"Wealthy, prosperous warrior"
"powerful ruler"
"bird catcher, fowl hunter"
"of or relating to an epic poem"
"gift from God"
"water sprite, water spirit"
"beloved friend, gentle one"
"sharp, intelligent"
"from the Afton river"
"from Sebaste (via Sebastian)"
"call to prayer"
"cold well; from the cold water source"
"strength, authority, force"
"middleman, arbitrator"
"resurrection, one who will rise again"
"promised land, merchant"
"to heal, healer"
Similar sound: These names share phonetic patterns with Eldin — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English ald + wine origins, giving them the same cultural heritage as Eldin.
Rhythm: Eldin is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.