Shawn sits next to 4 phonetic neighbors — Sean, Shane, and Shaun are the closest matches by sound. Most share Shawn's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"lion hardy"
"he who holds firm the good"
"gentle, loyal one"
"sea-born, born of the sea"
"friend, companion"
"seven; divine completion"
"son of the fair one"
"trustworthy, loyal"
"son of the king"
"sea warrior"
"one who mills grain"
"wolf lover"
"high-spirited person"
"lion-like, brave"
"horse friend"
"farm settlement of Dudda"
"modern blend of Kai (sea) and -son suffix"
"noble friend, elf friend"
"world-mighty"
Similar sound: These names share phonetic patterns with Shawn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew (Yochanan) via Irish (Sean) origins, giving them the same cultural heritage as Shawn.
Rhythm: Shawn is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.