Kaicen sits next to 5 phonetic neighbors — Kaysen, Casen, and Kaison are the closest matches by sound. Most share Kaicen's Multi-origin blend-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sea/pure/rejoice (Kai) + son of (-sen)"
"queen, counsel"
"from Arcadia, of the idyllic land"
"life"
"lord of the estate"
"strong, enduring, firm"
"strong, powerful (Roman association)"
"mighty as a bear"
"magnificent one"
"manly beauty, sun god"
"navigator, guide"
"high, noble, strong"
"flower bud casing"
"son of Max, son of the greatest"
"son of Aodh (fire)"
"possibly related to Old Norse Olaf (ancestor's relic)"
"enduring and given by God"
"heather, heath plant"
"rope maker"
"God has helped, helped by God"
"from Lucania (region of southern Italy)"
Similar sound: These names share phonetic patterns with Kaicen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Multi-origin blend origins, giving them the same cultural heritage as Kaicen.
Rhythm: Kaicen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.