Sinai sits next to 5 phonetic neighbors — Sinead, Silas, and Simon are the closest matches by sound. Most share Sinai's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Mountain of divine revelation"
"altar"
"call to prayer"
"aunt"
"land of God (via Marrakesh, Berber origin)"
"reddish-haired, ruddy complexion"
"strong woman, gazelle"
"abundance, growth"
"praised one, commended"
"precious, esteemed"
"prophet swallowed by whale"
"hope, aspiration"
"growth, increase, abundance"
"moonlit, luminous"
"one who wraps himself in devotion"
"affectionate, inclined toward others with love"
"God has remembered"
"strength, royalty"
"small, little"
"goodness, virtue, benevolence"
Similar sound: These names share phonetic patterns with Sinai — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Sinai.
Rhythm: Sinai is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.