Treshaun sits next to 5 phonetic neighbors — Deshawn, Reshawn, and Tremayne are the closest matches by sound. Most share Treshaun's Hebrew via Irish via African-American English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious (via Shaun)"
"A dark image or form following a person or object"
"reddish-brown, russet-colored"
"large gun, powerful force"
"bright, splendid"
"variant of Amal, meaning work or action"
"strong-willed warrior"
"name of God"
"dawn, new beginning"
"dear, beloved"
"warrior, man of valor"
"dark, full; complete darkness"
"modern invented name"
"prosperous landowner"
"descendant of Cathasach"
"spear, metalsmith"
"fair-haired one"
"western field"
"of Mars, warlike"
"fragrant ointment"
"divine flame, light of the Lord"
Similar sound: These names share phonetic patterns with Treshaun — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Irish via African-American English origins, giving them the same cultural heritage as Treshaun.
Rhythm: Treshaun is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.