Sairus sits next to 5 phonetic neighbors — Cyrus, Sirus, and Darius are the closest matches by sound. Most share Sairus's Persian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"like the sun, throne"
"dweller in the town"
"wealth and honor have come to my family"
"altar of heaven"
"junior officer, student soldier"
"battle, warrior"
"red-haired, ruddy"
"light, glowing"
"spear"
"beloved, gracious (variant of Erasmus)"
"Bright; variant of Albin meaning white or bright"
"Ford, river crossing"
"ash tree settlement (variant of Ashton)"
"invented by Jonathan Swift from Esther Vanhomrigh (Van + Essa); no ..."
"hardwood"
"ruler of the people"
"cymbal player, dulcimer musician"
Similar sound: These names share phonetic patterns with Sairus — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Persian Kurush origins, giving them the same cultural heritage as Sairus.
Rhythm: Sairus is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.