Arias sits next to 4 phonetic neighbors — Aria, Arya, and Ayrias are the closest matches by sound. Most share Arias's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"air, melody"
"American invented name; possibly related to Tamara (date palm) via ..."
"God is gracious (from Juana/Juanita lineage)"
"God is gracious"
Similar sound: These names share phonetic patterns with Arias — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Italian/Latin origins, giving them the same cultural heritage as Arias.
Rhythm: Arias is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.