Isleya sits next to 5 phonetic neighbors — Isla, Islay, and Alea are the closest matches by sound. Most share Isleya's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"island, isle dweller"
"possibly famous warrior"
"cross, faith"
"canary songbird"
"divine, ethereal"
"noble riches"
"Small songbird; clever and spirited"
"murmuring rock (from Lorelei)"
"lame, limping"
"light, torch"
"God has favored me"
"Illustrious; renowned"
"possibly derived from Karl, meaning free man"
"free man; free woman"
"delicate; creative blend of Delilah and Eliza"
"woman from Lydia"
Similar sound: These names share phonetic patterns with Isleya — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse via Spanish/Scottish origins, giving them the same cultural heritage as Isleya.
Rhythm: Isleya is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.