Dylon sits next to 3 phonetic neighbors — Dylan, Dillon, and Dilan are the closest matches by sound. Most share Dylon's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of the sea"
"paradise, divine realm"
"Lord have mercy"
"God has heard"
"friends, allies (from Caddo origins of Texas)"
"master, mister (honorific)"
"prosperous friend"
"joined, attached"
"modern invented name variant of Hayden"
"settlement by the woodland grove"
"short land, curtailed land"
"modern invention with Celtic phonetic roots"
"from Sebastia"
"solitary monk, single house"
"son of the devotee of Saint Faolán"
"modern American invented name"
"son of Dax"
"son of the supplanter"
"of Devon, creative modern coinage"
"man of prayer"
"one who carves wood or stone"
Similar sound: These names share phonetic patterns with Dylon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Dylon.
Rhythm: Dylon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.