Atoya sits next to 5 phonetic neighbors — Atoya, Latoya, and Atoya are the closest matches by sound. Most share Atoya's Native American cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"river, flowing water"
"pure"
"Blue; sapphire; sky-colored"
"God is gracious"
"from Denmark, Danish one"
"Bright and radiant"
"coined American name; likely from Keisha/Keziah (cassia tree)"
"Modern African-American invented name; possibly related to Tanisha ..."
"song of strength"
"strong and studious"
Similar sound: These names share phonetic patterns with Atoya — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Native American origins, giving them the same cultural heritage as Atoya.
Rhythm: Atoya is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.