Syrus sits next to 4 phonetic neighbors — Cyrus, Sirus, and Silas are the closest matches by sound. Most share Syrus's Persian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sun, sunshine"
"fortunate, blessed"
"jet black, black gemstone"
"one who resembles God"
"from the burnt clearing"
"marsh dweller"
"from Airelle (Norman place name)"
"deserving, worthy"
"follower of Calvin (in Protestant tradition)"
"dear, beloved"
"powerful and brave"
"linden tree, lime tree"
"life"
"from the town, settlement"
"little fire (from Irish aodh)"
"great house"
"avenger, one who does not forget"
"from the angel clan"
"highest point, peak"
"crown, wreath"
Similar sound: These names share phonetic patterns with Syrus — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Persian khur origins, giving them the same cultural heritage as Syrus.
Rhythm: Syrus is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.