Kaizen sits next to 4 phonetic neighbors — Kaison, Kayden, and Mason are the closest matches by sound. Most share Kaizen's Japanese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"continuous improvement"
"dweller by the ridge"
"abundant, bountiful"
"God has established (via Jachai root)"
"son of the blessed one"
"narrow water crossing"
"genuine, honest, without deceit"
"modern elaboration of Jason"
"little red one (from red hair)"
"chief, leader"
"great brightness, sea circle"
"befitting a king"
"battle strength"
"red-haired, little red one"
"he who descends, descent"
"servant, messenger"
"leatherworker, craftsman"
"wine stone"
"from the settlement by the stone"
"son of Kyle"
Similar sound: These names share phonetic patterns with Kaizen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Japanese origins, giving them the same cultural heritage as Kaizen.
Rhythm: Kaizen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.