Shaun sits next to 4 phonetic neighbors — Sean, Shawn, and John are the closest matches by sound. Most share Shaun's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"new house"
"shelter, sanctuary"
"sweet-smelling resin"
"spirit, divine inner power"
"peaceful, tranquil"
"serpent's mouth"
"son of the ridge dweller"
"spear"
"life"
"lord of the marches, borderlord"
"settlement by the pool"
"savior"
"my brother is high, noble"
"land of mountains"
"young wolf"
"reputation, esteem"
"wealthy protector"
"blind"
"son of Jack"
Similar sound: These names share phonetic patterns with Shaun — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Irish origins, giving them the same cultural heritage as Shaun.
Rhythm: Shaun is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.