Yoan sits next to 3 phonetic neighbors — Johan, Juan, and Yohan are the closest matches by sound. Most share Yoan's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"battle glory"
"island of the river"
"lord, nobleman"
"bean grower"
"my lamp, my light"
"kings, monarchs"
"of the earth mother"
"blessed, happy"
"white, pure"
"military commander"
"remedy, cure"
"God supports, Yahweh supports"
"beloved of God"
"the beginning, the start"
"YHWH is salvation, God saves"
"No one is like God (implied meaning)"
"lucky, fortunate, auspicious"
"whole power, universal ruler"
"beautiful mountain"
Similar sound: These names share phonetic patterns with Yoan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Yoan.
Rhythm: Yoan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.