Theron sits next to 4 phonetic neighbors — Theron, Aaron, and Baron are the closest matches by sound. Most share Theron's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pursuer, one who seeks"
"son of Jan (John)"
"variant of Devon: from the Devon region"
"to conquer"
"one who deals in coal"
"God is salvation"
"brave and hardy"
"one who works with stone"
"bear-like strength (if related to arth)"
"battle"
"little warrior"
"determined guard, resolute protector"
"lean, slender warrior"
"lord, master"
"rescuer, redeemer"
"place name: town in Pembrokeshire, Wales"
"flower sound"
"from the Roman Gens Terentia"
"dedicated to Mars (god of war)"
"son of Piers (Peter)"
Similar sound: These names share phonetic patterns with Theron — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Theron.
Rhythm: Theron is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.