Cyrus sits next to 3 phonetic neighbors — Silas, Kyros, and Cirrus 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
"sun, throne"
"riverbank, shore"
"Christian (the religion)"
"tile maker, brick layer"
"God is gracious (via Jack, from John)"
"God has given"
"gift of Yahweh"
"great, venerable, majestic"
"gracious, merciful"
"administrator of justice"
"lake colony, settlement by the pool"
"warrior, strong man"
"tumult, noise"
"from the valley town"
"God will uplift, exalt"
"warrior's town"
"virile one"
"dog (symbol of loyalty)"
"to flow down, descend"
"valiant, brave"
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.