Dion sits next to 4 phonetic neighbors — Deon, Leon, and Rion are the closest matches by sound. Most share Dion's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"divine, godly"
"god-helmet"
"to love"
"cart maker, transporter"
"little warrior, young Mars"
"house, home"
"crow, raven"
"without wax, pure"
"inheritance, bequest"
"old, long past"
"flame, fiery one"
"earth-lover"
"God sees, God allocates"
"little warrior, young Mars"
"warrior, defender"
"strong, mighty"
"from Percy (Norman place name)"
"modern invented name"
"from Mauritania"
Similar sound: These names share phonetic patterns with Dion — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Dion.
Rhythm: Dion is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.