Dylan sits next to 5 phonetic neighbors — Dillon, Milan, and Julian are the closest matches by sound. Most share Dylan's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of the sea, great tide"
"little Laura"
"traveler from a foreign land"
"all, completely beautiful"
"industrious, eloquent one"
"pleasant meadow"
"from the oak wood"
"faith, trust"
"weapon, mace"
"short form of Cleopatra: glory of the father"
"love, beloved"
"forgiveness"
"heavenly, of the sky"
"high, noble (Ali) + grace (Anna)"
"renowned in battle"
"entire, all-encompassing"
"grey fortress, grey enclosure"
"lioness of God"
"turbulent, passionate (figurative)"
"variant of Jackie or Casey"
Similar sound: These names share phonetic patterns with Dylan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Dylan.
Rhythm: Dylan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.