Eagan sits next to 4 phonetic neighbors — Egan, Eagan, and Keegan are the closest matches by sound. Most share Eagan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"little fire, born of fire"
"young warrior"
"clover plant, good luck"
"dark one"
"ruler of the army (via Walter)"
"born of fire"
"son of Oda"
"little blind one, the blind one"
"little churchman, associated with the church"
"Irish Gaelic diminutive form"
"dove"
"slender, narrow"
"river"
"from Carlisle"
"slender, narrow"
"son of the servant of John"
"distinguished ruler"
"dark warrior, dark brown champion"
"handsome son"
"my angel, my envoy"
"one island, isolated place"
Similar sound: These names share phonetic patterns with Eagan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Eagan.
Rhythm: Eagan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.