Mousa sits next to 4 phonetic neighbors — Musa, Moses, and Moussa are the closest matches by sound. Most share Mousa's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"drawn from the water"
"a million (great abundance, infinite blessing)"
"tribal or religious leader"
"handsome, well-built, beautiful of form"
"firm, steadfast, hard"
"the path of God"
"right side, prosperity"
"gift, benefit"
"prince, commander, leader"
"magnificence, nobility"
"strong, brave"
"diamond, hardest stone"
"faith, belief, trust in God"
"friend of God"
"plural of deen (faith)"
"gate of paradise, lush"
"the all-glorious, sublime"
"exalted, supreme"
"lord, prince"
"noble, generous host"
Similar sound: These names share phonetic patterns with Mousa — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew/Egyptian origins, giving them the same cultural heritage as Mousa.
Rhythm: Mousa is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.