Tanya sits next to 4 phonetic neighbors — Tania, Tonya, and Tara are the closest matches by sound. Most share Tanya's Russian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fairy queen"
"noble, of noble kind"
"from the court"
"God is gracious"
"little dear, most precious"
"star of the sea"
"holiest city in Islam"
"shining with glory"
"pointed projectile; symbol of direction and purpose"
"night, dark beauty"
"crowned with laurels (via Stephanie)"
"pleasant, beautiful, radiant"
"sailor, one who sails"
"from the oak, wise one"
"silver; from the region of Aria (ancient Persia)"
"elf ruler, wise counselor"
"dry, drought-tolerant (from Greek azaleos)"
"joyful, beautiful"
"son of Harry"
"beautiful, graceful (via -elle suffix)"
"lake, pool"
Similar sound: These names share phonetic patterns with Tanya — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Slavic folk etymology origins, giving them the same cultural heritage as Tanya.
Rhythm: Tanya is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.