Arriona sits next to 4 phonetic neighbors — Ariana, Adriana, and Arianna are the closest matches by sound. Most share Arriona's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"silver wheel, silver circle"
"rainbow"
Similar sound: These names share phonetic patterns with Arriona — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Arriona.
Rhythm: Arriona is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.