Siham sits next to 3 phonetic neighbors — Siam, Sienna, and Sahar are the closest matches by sound. Most share Siham's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"arrows"
"high, exalted"
"pure, immaculate"
"eternal, forever"
"fragrance, sweet scent"
"radiant, shining"
"full of life, lively"
"sweetheart, darling"
"bounty, generosity"
"spiritual, of the soul"
"trustworthy, faithful"
"princess, radiant one"
"high, exalted, sublime"
"prayer, supplication"
"graceful, lovely"
"Venus (the planet and goddess of beauty)"
"friendly, affectionate companion"
"innocent, spotless"
Similar sound: These names share phonetic patterns with Siham — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic origins, giving them the same cultural heritage as Siham.
Rhythm: Siham is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.