Joann sits next to 4 phonetic neighbors — Joan, Joanne, and Jo-Ann are the closest matches by sound. Most share Joann's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"full of grace"
"nobility, good breeding"
"God is my rock"
"playful, joyful (folk etymology)"
"dedicated to Jupiter"
"bright clearing in the wood"
"God is my oath"
"temple, shrine"
"free woman"
"desired, wished for"
"youthful, young"
"manly, strong"
"heavenly calm, noble tranquility"
"heavenly, elevated"
"pure"
"grace, favor"
"carp fish; symbol of perseverance and good luck"
"cherry tree flower"
"light, torch"
"descendant of the helpful one"
"hill, hillfort"
Similar sound: These names share phonetic patterns with Joann — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Joann.
Rhythm: Joann is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.