Joanie sits next to 4 phonetic neighbors — Joanie, Johnny, and Janie are the closest matches by sound. Most share Joanie's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"from Cymru (Wales)"
"famous joy"
"peaceful bright one (combined Celtic/Swahili roots)"
"man of God, messenger"
"noble type (via Heidi)"
"my God is an oath"
"God has answered"
"pure"
"forest dweller"
"that which surrounds"
"God is gracious (Anna component)"
"beloved, wished-for child"
"sweet as honey"
"victory of the people"
"high, exalted, sublime"
"fragrant spice"
"beloved of Yahweh"
"spiritual essence, animating force"
"broad meadow, wide clearing"
"high hill"
Similar sound: These names share phonetic patterns with Joanie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Joanie.
Rhythm: Joanie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.