Keilan sits next to 4 phonetic neighbors — Keelan, Caelan, and Kelan are the closest matches by sound. Most share Keilan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"slender, narrow"
"truth"
"descendant of the gentle one"
"prince, king"
"son of Morris/Maurice"
"little king"
"champion, noble one"
"estate by the cliff"
"possessor of good"
"sad"
"from the oak grove"
"descendant of Brocán (little badger)"
"Ireland, land of the west"
"swift, quick"
"descendant of Braonán (moisture/sorrow)"
"supreme, excellent"
"from Grantham"
"descendant of the dark-eyed one"
Similar sound: These names share phonetic patterns with Keilan — 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 Keilan.
Rhythm: Keilan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.