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"
"rye meadow"
"pure, slender"
"fair, lovely"
"variant of Ariana/Arianna"
"strength in battle"
"land of the Welsh people"
"one strength, unique strength"
"little angel"
"woodland clearing, meadow"
"peace"
"lake or pool (from Welsh -lyn suffix)"
"dew of the sea"
"from the Afton River"
"golden, of gold"
"radiant, sun"
"bent river"
"star of the sea"
"gift of God"
"little bird"
"clear, unsullied"
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.