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"
"handsome, beautiful"
"son of the peacemaker"
"gray-haired one from the valley"
"charcoal merchant, coal worker"
"Carl's town or farm"
"new house"
"settlement at the clean/pure place"
"surname-origin given name"
"sheltered bay, cove"
"one who lisps or stammers"
"of Jove (Jupiter), sky father"
"God has favored, grace of God"
"nickname for Charles"
"small"
"wise protection"
"rope maker"
"morning star (Venus before sunrise)"
"from the hill by the lake"
"modern invented name"
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.