Diania sits next to 3 phonetic neighbors — Diana, Dania, and Juliana are the closest matches by sound. Most share Diania's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"divine, goddess of the moon and hunt"
"little lady, mistress of the house"
"a simple bound shoe; the sandalwood tree"
"modern invented name"
"little dear, cherished one"
"powerful ruler"
"friend of the meadow"
"Grace, favor"
"farm or settlement near the shire"
"the place to gather sticks"
"truth (possible Alethea derivation)"
"golden one"
"winged, nourished"
Similar sound: These names share phonetic patterns with Diania — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Diania.
Rhythm: Diania is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.