Keelan sits next to 4 phonetic neighbors — Kealan, Keelan, and Declan are the closest matches by sound. Most share Keelan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"slender, narrow"
"emperor, ruler, kingly"
"sprout, expression"
"righteous, just"
"without death, eternal"
"the frenzied one, the inspired"
"crooked nose"
"ripe, free"
"page boy, herald"
"God saves"
"kingly, held by the heel (supplanter)"
"variant of Drew, meaning manly/strong"
"green/fresh river"
"of the Cornelia family"
"little man, warrior"
"from the kaupa (trading) land"
"creative spelling of Rustin"
"kingly, of the king"
"royal settlement, king's town"
"cold, enduring"
"to reap, harvest"
Similar sound: These names share phonetic patterns with Keelan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic caol origins, giving them the same cultural heritage as Keelan.
Rhythm: Keelan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.