Kiyon sits next to 5 phonetic neighbors — Kion, Kiyoshi, and Dion are the closest matches by sound. Most share Kiyon's Japanese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pure, clean, blessed"
"island"
"modern American name creation"
"homestead, settlement"
"thankful, God has heard"
"blessed, happy"
"a rousing song of praise or national identity"
"of Mars, warlike"
"invented American name, likely a blend of Cash and Ashton"
"variant of Zavion, modern invented name"
"possessor of good"
"long hill, ridge settlement"
"fame-land, renowned in the territory"
"modern coined name; possibly related to Jacob (supplanter) or Jakari"
"one who lays slates, roofer"
"he who descended, to descend"
"natural/sky (possible Polynesian interpretation)"
"resin, tree sap (unrelated etymology)"
"the heavenly one, royal (via Kalani)"
"noble guardian"
Similar sound: These names share phonetic patterns with Kiyon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Japanese origins, giving them the same cultural heritage as Kiyon.
Rhythm: Kiyon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.