Osiris sits next to 3 phonetic neighbors — Cyrus, Orion, and Aldric are the closest matches by sound. Most share Osiris's Ancient Egyptian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"throne of the eye (possible etymology)"
"son of Jack"
"God knows"
"jet-black, swift"
"craftsman of fermented beverages"
"free man"
"supplanter, one who follows"
"source of joy"
"stammering, lisping"
"west wind"
"skill acquired through experience"
"new house"
"God heals"
"song, singing bird"
"wise as a wolf"
"God sees, God is my strength"
"bearer of Christ"
"God shall add (another son)"
"great tide, son of the sea"
"chief desire"
"God will uplift (from Jeremy/Jeremiah)"
Similar sound: These names share phonetic patterns with Osiris — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Ancient Egyptian origins, giving them the same cultural heritage as Osiris.
Rhythm: Osiris is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.