Jiren sits next to 3 phonetic neighbors — Karen, Darren, and Warren are the closest matches by sound. Most share Jiren's Japanese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"powerful, compassionate (fictional origin)"
"sea warrior, sea spear"
"son of Ken, son of the bold"
"one who raids, bold adventurer"
"pillar, support"
"builder, craftsman"
"God is gracious (from Shawn element)"
"herald, messenger"
"God listens"
"little fire (via Aidan)"
"the color blue, sky"
"covered with dust"
"from Luca, of the light"
"who is like God?"
"God supports"
"bright, luminous"
"peaceful, tranquil"
"consecrated, worthy of reverence"
"fashionable, sharp (modern connotation)"
Similar sound: These names share phonetic patterns with Jiren — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Japanese/Fictional origins, giving them the same cultural heritage as Jiren.
Rhythm: Jiren is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.