Siani sits next to 4 phonetic neighbors — Sienna, Siani, and Shani are the closest matches by sound. Most share Siani's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"rye meadow, rye clearing"
"lion, lioness"
"gracious gift of God"
"mighty in battle"
"hay clearing"
"powerful land-owner"
"wise, a wise person"
"bright, radiant flower"
"west wind, gentle breeze"
"bright, clear, famous"
"beautiful serpent (wisdom)"
"bright, shining (variant of Helen)"
"hunter, rising in the sky"
"variant of Amari meaning strength or grace"
"meadow on a ledge"
"dweller by the river"
"falling, flowing motion"
"stone of the flank (medicinal stone)"
"bright grace of God"
"devoted to God"
Similar sound: These names share phonetic patterns with Siani — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Welsh origins, giving them the same cultural heritage as Siani.
Rhythm: Siani is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.