Sharon sits next to 4 phonetic neighbors — Charon, Sheron, and Sharyn are the closest matches by sound. Most share Sharon's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fertile plain, coastal plain of Sharon"
"knowledge, wisdom"
"Yahweh is merciful"
"grace, beloved"
"glowing coal in a meadow clearing"
"place of the La Ramee family"
"eagle valley"
"wise, knowing"
"from the hay field"
"precious gem"
"little star (possible etymology)"
"son of Adam"
"beautiful flower"
"bee"
"dweller by the lane"
"rye field"
"noble, of the patrician class"
"whole, universal"
"precious gem, treasure"
"precious green gemstone"
Similar sound: These names share phonetic patterns with Sharon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Sharon.
Rhythm: Sharon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.