Eian sits next to 4 phonetic neighbors — Ian, Ewan, and Evan are the closest matches by sound. Most share Eian's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"god of justice"
"grove, wooded area"
"gift of God"
"oak grove"
"green gemstone"
"bright, bold (from 'Kash' element)"
"God strengthens"
"asked of God, prayed for"
"he to whom it belongs"
"brave in war"
"shade, silhouette"
"surname-derived given name"
"place of protection and calm"
"little Hugh"
"eldest son (Na'vi fictional language)"
"royal town or manor"
"cultivator, earth worker"
"strict, disciplined"
"supplanter, heel-follower (Jacob/James origin)"
Similar sound: These names share phonetic patterns with Eian — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Gaelic origins, giving them the same cultural heritage as Eian.
Rhythm: Eian is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.