Reon sits next to 5 phonetic neighbors — Leon, Rion, and Neo are the closest matches by sound. Most share Reon's Japanese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lotus sound"
"son of Oeneus, warrior"
"son of John"
"from the mountain"
"sickness; weakness"
"warrior, earth ruler"
"kind, gentle, handsome"
"from Bryans land"
"one of free status"
"powerful giant, cosmic force"
"supplanter (via Jacob/Kobe etymology)"
"famous shouter, distinguished one"
"willow tree, graceful and flexible"
"variant of Jason (healer)"
"recompense of God"
"Kent dale, valley settlement"
"destroyer of enemies, world peace"
"keen-eyed hunter"
"one who cuts, cutter of cloth or stone"
"slender, narrow"
"tile-maker, skilled craftsman"
Similar sound: These names share phonetic patterns with Reon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Japanese Buddhist origins, giving them the same cultural heritage as Reon.
Rhythm: Reon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.