Shelton sits next to 5 phonetic neighbors — Sheldon, Dalton, and Colton are the closest matches by sound. Most share Shelton's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from the ledge farm, shelf settlement"
"to shout, to sing joyfully"
"faithful one"
"firebrand (via Tyson)"
"God is gracious"
"mighty ruler with good counsel"
"son of Jens"
"helper, protector"
"from the high place"
"new house"
"belonging to God, of the Lord"
"son of Dax"
"precious green stone; holder of good"
"prosperous friend"
"the greatest, most excellent"
"black, swarthy"
"spear warrior"
"good speech"
"falcon, bird of prey"
"unique, one of a kind"
"desert world (fictional)"
Similar sound: These names share phonetic patterns with Shelton — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Shelton.
Rhythm: Shelton is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.