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"
"God has favored me"
"foreign wealth, riches"
"canary songbird"
"Small songbird; clever and spirited"
"laurel, honor"
"beautiful, all"
"cross, faith"
"possibly famous warrior"
"woman from Lydia"
"from the Claudian family"
"heavenly, of the sky or cosmos"
"Bright; clear; famous"
"possibly derived from Karl, meaning free man"
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.