Tiana sits next to 4 phonetic neighbors — Tiara, Diana, and Tatiana are the closest matches by sound. Most share Tiana's Slavic cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fairy queen, princess"
"gift, abundance"
"exalted, ascending"
"pure (via Kayla/Katherine association)"
"lion, lion of God"
"bright red, vivid crimson"
"dark one (variant)"
"lily flower, purity"
"clean, unsullied"
"wild rose"
"scholar, learned one"
"white or bright settlement"
"heavenly, of the sky"
"elf counsel, elf power"
"grace, favor"
"royal power, wise ruler"
"bringer of destruction"
"son of Matthew, gift of God"
"paradise, garden of heaven"
"hay clearing, hay field"
Similar sound: These names share phonetic patterns with Tiana — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Slavic origins, giving them the same cultural heritage as Tiana.
Rhythm: Tiana is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.