Kacen sits next to 5 phonetic neighbors — Kason, Cason, and Mason are the closest matches by sound. Most share Kacen's American English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"modern invented name, no historical meaning"
"moonlight, radiance"
"descent, gentle"
"companion, friend"
"flowing, running"
"Dutch diminutive form of Adriaan"
"God helps"
"one who lives near a steep bank"
"sea fortress"
"kingly, held by the heel (supplanter)"
"wanderer (from Scotti people's migrations)"
"given in honor of St. Maximilian Kolbe"
"dear, beloved"
"high will, desiring much"
"lord, master"
"little red-haired one"
"American creative variant of Trevor"
"man from the mountain"
"ancient Roman family name"
"God is my rock"
"son of Hendry (Henry)"
Similar sound: These names share phonetic patterns with Kacen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have American English origins, giving them the same cultural heritage as Kacen.
Rhythm: Kacen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.