Siah sits next to 4 phonetic neighbors — Isaiah, Ziah, and Sia are the closest matches by sound. Most share Siah's Hebrew-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is salvation"
"lion"
"son of the sea, born from ocean waves"
"navigator, guide"
"modern coinage; visually distinctive invented name"
"merchant, trader"
"joyful celebration, festivity"
"cup, goblet"
"limitless, beyond measure"
"crown, complete"
"who is like God?"
"God is gracious"
"modern coinage; possibly day-bright valley dweller"
"variant of Silas (forest, woods, or asked of God)"
"faithful, genuine, true"
"ray of light, counsel"
"God is gracious (via John)"
"friend of horses"
"leopard, tiger (possible Arabic root)"
"God delivers, divine rescue"
"one who seeks knowledge"
Similar sound: These names share phonetic patterns with Siah — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Siah.
Rhythm: Siah is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.