Arian sits next to 4 phonetic neighbors — Adrian, Aryan, and Arion are the closest matches by sound. Most share Arian's Persian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"of Ares, warrior-like"
"honoring God"
"of noble birth, honorable person"
"son of John"
"light, luminous"
"prince, chief"
"grace of God, king"
"great chief, eminent lord"
"may God give increase"
"loyal"
"bounty, kindly, beloved"
"son of the cloud"
"he who holds firm the good"
"oak grove, great"
"dark, dark-haired"
Similar sound: These names share phonetic patterns with Arian — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek/Latin origins, giving them the same cultural heritage as Arian.
Rhythm: Arian is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.