Marylou sits next to 3 phonetic neighbors — Mary, Marlo, and Carla Lou are the closest matches by sound. Most share Marylou's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"beloved, star of the sea (Mary) + famous warrior (Lou)"
"son of the right hand (via Benjamin)"
"daughter of the sun (folkloric)"
"tile maker, tile layer"
"short form of -lina names"
"Yahweh answers or provides"
"like unto God"
"daughter of Andrew, brave"
"Lisping; from the Roman family name Blaesus"
"My God is Yahweh"
"shining, bright one"
"world, universe"
"famous, illustrious"
"sun, powerful one"
"noble"
"little cat (pet name)"
"town of the new law"
"pure, clean"
"pearl of the meadow (Mae + Aubrey blend)"
"coral"
"sky, celestial realm"
Similar sound: These names share phonetic patterns with Marylou — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew + Germanic origins, giving them the same cultural heritage as Marylou.
Rhythm: Marylou is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.