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"
"reason, rational thought"
"greatest"
"Yahweh is God"
"things to be read/remembered"
"farm on stony ground"
"pure, clear"
"who is like God? (rhetorical, meaning no one)"
"who is like God"
"vigilant in battle (via Casey/Cathasaigh)"
"rejoicing, celebration"
"one who wields prosperity"
"defender of men"
"God has hidden, protected by God"
"deep valley dweller"
"hero of God, man of God"
"my light"
"protected dwelling"
"arms (of God)"
"woodland clearing"
"child of the sea and wave"
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.