Kowen sits next to 5 phonetic neighbors — Cohen, Cowan, and Owen are the closest matches by sound. Most share Kowen's Scottish/Irish Gaelic 'cobhan'-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"hollow, small cavity"
"creative American coinage"
"Italian form of John"
"the Lord saves"
"son of Rhys, ardor and enthusiasm"
"spear warrior, ancient one"
"wise one (from Sionann mythology)"
"of Jove (Jupiter), sky father"
"brave and hardy"
"royal dignity, greatness, grandeur"
"strength, my strength"
"from the deep valley, Devon land"
"well-born, noble"
"church"
"fire, blaze (folk association)"
"huntsman, game warden"
"pine tree"
"land of Eoghan (Owen)"
"ancestor's descendant"
"American invented name with theophoric -jah suffix"
"morning star (Venus before sunrise)"
Similar sound: These names share phonetic patterns with Kowen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish/Irish Gaelic 'cobhan' origins, giving them the same cultural heritage as Kowen.
Rhythm: Kowen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.