Orion sits next to 3 phonetic neighbors — Ryan, Orrin, and Oriole are the closest matches by sound. Most share Orion's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"rising in the sky, boundary"
"black gemstone"
"lying flat (large book)"
"little saint"
"God strengthens, Yahweh is my strength"
"young warrior (folk etymology)"
"one who glorifies God"
"fair-haired hero; white warrior"
"small, humble"
"broad meadow"
"son of marsh-dwellers"
"kingly, of royal blood"
"descendant of Grádaigh"
"battle"
"adornment, goodness"
"little battle"
"brave in battle"
"praised, thankful"
"from Lucania"
"divine peace"
"God of the people"
Similar sound: These names share phonetic patterns with Orion — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Orion.
Rhythm: Orion is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.