Sirus sits next to 3 phonetic neighbors — Cyrus, Sirius, and Sirus are the closest matches by sound. Most share Sirus's Persian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sun, throne"
"God is beautiful"
"well-formed, handsome"
"son of Lawrence"
"descendant of Rian"
"gentle, tame"
"landholder, lord"
"strong-willed warrior"
"variant of John"
"dwelling, honor"
"God has remembered"
"will, protection (short form of Wilhelmina)"
"deserving of praise, earned reward"
"slender, narrow (from Irish Caolan)"
"healer, one who heals"
"from the gray hill"
"one who bakes bread"
"invented modern name"
"pledge, oath, measure"
"strength, authority, force"
Similar sound: These names share phonetic patterns with Sirus — 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 Sirus.
Rhythm: Sirus is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.