Siyon sits next to 4 phonetic neighbors — Zion, Sion, and Simon are the closest matches by sound. Most share Siyon's Hebrew-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"dry place, sunny place"
"God sees, God beholds"
"my fire, my light"
"sacred covenant"
"shearer of woolen cloth, cloth cutter"
"peaceful, man of peace"
"God is my strength"
"causing to forget"
"one who returns to God"
"mouth of brass"
"God has established"
"sweetness of God"
"clean, righteous"
"glory of God"
"place in the wilderness"
"God sees, God perceives"
"God will strengthen; God is my strength"
"one who struggles with God"
"the Christ, savior figure"
Similar sound: These names share phonetic patterns with Siyon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Siyon.
Rhythm: Siyon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.