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"
"beautiful, handsome"
"rejoice, be glad (via Gaius/Caio)"
"round, barrel"
"great lord"
"son of Brice"
"strong and steadfast"
"willow tree, graceful and flexible"
"brave, courageous"
"powerful giant, cosmic force"
"bright fame"
"bright-headed"
"father of strong men"
"brave as a bear, bear strength"
"from the River Aire"
"honoring God, to honor God"
"bower, canopy of branches"
"from Tracy, a Norman place"
"work-power, industry"
"beautiful, good, noble"
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.