Dillon sits next to 4 phonetic neighbors — Dylan, Dillan, and Dylon are the closest matches by sound. Most share Dillon's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"great tide, son of the sea"
"born at dawn"
"gray-haired one"
"city of the moon"
"son of the praised one"
"earthly, of the earth"
"strength"
"perceiving sounds, hearing the world's cries"
"bright, full of sunshine"
"path, track, trail"
"the brown one"
"dark blue water"
"of manly valor, from Andre"
"song, singing bird"
"ancient, enduring"
"church official, rule of law"
"youthful, young one"
"scholar"
"maker of cases or boxes"
"open grassy land"
Similar sound: These names share phonetic patterns with Dillon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Dillon.
Rhythm: Dillon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.