Cyrus sits next to 4 phonetic neighbors — Iris, Sirius, and Cyprus are the closest matches by sound. Most share Cyrus's Persian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"throne"
"fairy queen, princess (from Saint Tatiana tradition)"
"shining, heavenly"
"bridge keeper, lives near a bridge"
"fair-haired one from the clearing"
"skilled craftsperson, artisan"
"Ever (always or eternal) plus Lea (meadow); eternal meadow"
"gift of God"
"born of a fairy"
"joined, attached"
"harmony, little rock"
Similar sound: These names share phonetic patterns with Cyrus — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Persian origins, giving them the same cultural heritage as Cyrus.
Rhythm: Cyrus is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.