Sanji sits next to 3 phonetic neighbors — Sanjay, Sanjiv, and Sandy are the closest matches by sound. Most share Sanji's Japanese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"third son; three o'clock"
"well-known, distinguished"
"pure, clean"
"language, voice"
"owner, master"
"ruler, lord"
"approval, divine pleasure"
"rays of light, luminous"
"servant of the Bestower of gifts"
"of the sword"
"steadfast, unwavering"
"eye, vision"
"lord, prince, chief"
"capable, powerful, able"
"brave, courageous"
"one who grants victory"
Similar sound: These names share phonetic patterns with Sanji — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Japanese origins, giving them the same cultural heritage as Sanji.
Rhythm: Sanji is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.