Hagan sits next to 3 phonetic neighbors — Logan, Keegan, and Reagan are the closest matches by sound. Most share Hagan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"descendant of fire, young warrior"
"son of Hugh"
"circular stone fortress"
"spear ruler"
"musical, expressing personal emotion through song"
"fire, flame"
"modern invented name"
"auspicious, favorable"
"courteous, well-bred, polite"
"ash tree settlement"
"bearer of Christ"
"meadow dweller"
"safe haven, shelter, refuge"
"chief, royal descendant"
"pool near the elm tree"
"healer, to heal"
"son of Day, child of daylight"
"little king"
"round, barrel"
"white, fair-complexioned"
"lucky, fortunate"
Similar sound: These names share phonetic patterns with Hagan — 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 Hagan.
Rhythm: Hagan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.