Giana sits next to 4 phonetic neighbors — Gianna, Joanna, and Diana are the closest matches by sound. Most share Giana's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"noble, high meadow"
"lily flower"
"noble kind, noble nature"
"weary"
"child of light"
"darling, beloved one"
"descendant of a ruler"
"one who mills grain"
"defender of mankind"
"grace, merciful"
"laurel tree; bay laurel"
"honey bee + youthful (blend with Melissa)"
"dark, rich (possibly referring to the dark Adriatic waters)"
"queenly dignity, regal bearing"
"from Britain, British woman"
"gift of God (variant of Maisie/Matthew)"
"meadow near the birch trees"
"frequenter of churches"
"eagle valley"
"ash tree meadow"
Similar sound: These names share phonetic patterns with Giana — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Italian origins, giving them the same cultural heritage as Giana.
Rhythm: Giana is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.