Arius sits next to 4 phonetic neighbors — Darius, Marius, and Orion are the closest matches by sound. Most share Arius's Latin-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"noble, warrior, of high birth"
"my God is Yahweh"
"strength, resolve, hardness (word name)"
"increasing, growing, abundance"
"fire, energy (sound symbolic)"
"protector of mankind"
"settlement on the ridge, keel town"
"son of Tay"
"divinely chosen"
"strong, hardy"
"bright fame"
"wolf-desire, wolf's help"
"little fire"
"American invented name with theophoric -jah suffix"
"hollow, cauldron"
"modern variant of Daxton"
"God has favored, grace of God"
"to shout for joy, to sing"
"love, romantic feeling"
"leopard, swift and fierce"
"God prevails"
Similar sound: These names share phonetic patterns with Arius — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin/Greek origins, giving them the same cultural heritage as Arius.
Rhythm: Arius is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.