Kegan sits next to 4 phonetic neighbors — Keegan, Reagan, and Regan are the closest matches by sound. Most share Kegan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"small flame, little fire"
"place of meeting"
"the realization that every stranger has a full and vivid life"
"spear ruler, powerful warrior"
"strength"
"settlement by water"
"supreme strength"
"modern coinage; possibly town settlement"
"one near the woodland clearing"
"dwellers in wooded hills"
"mythical bird of rebirth"
"God is gracious"
"short form of Andre/Andrew"
"one who moves smoothly"
"bird-like, of the birds"
"horn blower"
"modern American invented name"
"modern coinage; possibly day-bright valley dweller"
"from the Cassius Roman family clan"
Similar sound: These names share phonetic patterns with Kegan — 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 Kegan.
Rhythm: Kegan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.