Marley sits next to 3 phonetic neighbors — Harley, Farley, and Charley are the closest matches by sound. Most share Marley's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pleasant wood; meadow near a lake"
"marsh flower"
"of the Julian family (Gens Julia)"
"God is gracious"
"Jupiter's child, Jove"
"from Breukelen"
"fortification wall"
"rule, sovereignty"
"noble type"
"God will add; God increases"
"spiritual gladness, divine blessing"
"goddess, divine"
"most holy"
"little ruler, impulsive one"
"sea of bitterness"
"pure"
"heavenly sea, royal waters"
"strong, brave, manly"
"high tower"
"beloved; of love"
"knotted cord"
Similar sound: These names share phonetic patterns with Marley — 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 Marley.
Rhythm: Marley is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.