Atreyus sits next to 4 phonetic neighbors — Atreyu, Atreus, and Darius are the closest matches by sound. Most share Atreyus's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of the brave, warrior"
"holly corner, hazel grove"
"who is like God"
"healer (if from Jason)"
"night watchman"
"fame-land, renowned in the territory"
"beloved son"
"the number seven"
"messenger goddess"
"eloquent, articulate (from Bayan)"
"legacy, something handed down"
"from the place of the sturgeon"
"storehouse of precious things"
"like a lion, of Leon"
"God is salvation, Yahweh saves"
"devoted to God"
"luminous, bright"
"heath dweller, one from the heathlands"
"rejoicing in the way"
"lake"
"red-haired counselor"
Similar sound: These names share phonetic patterns with Atreyus — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have fictional Fantastica language origins, giving them the same cultural heritage as Atreyus.
Rhythm: Atreyus is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.