Mazieon sits next to 3 phonetic neighbors — Mason, Mazion, and Dazion are the closest matches by sound. Most share Mazieon's American English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"creative expansion of Mazie (pearl) + -on suffix"
"home ruler, lord of the estate"
"beloved, dear one"
"noble promise"
"rowan tree"
"great happiness"
"ancient Roman family name"
"variant of Javion (possibly from Xavier — savior)"
"of Mars, warrior"
"glory and spear (hrod + gar)"
"promised land, holy city"
"steep valley settlement"
"anointed one (follower)"
"slender, narrow"
"son of Hays, hedged area"
"God is gracious (via Eoin/John)"
"from Brock's town, badger settlement"
"large homestead"
"fortified camp, military settlement"
"lasting, enduring"
"battlefield (poetic extension)"
Similar sound: These names share phonetic patterns with Mazieon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have American English origins, giving them the same cultural heritage as Mazieon.
Rhythm: Mazieon is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.