Radhya sits next to 3 phonetic neighbors — Radha, Radhika, and Madhya are the closest matches by sound. Most share Radhya's Indian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"worshipped, adored"
"flowing river, stream"
"delightful, charming"
"one who shines like a star"
"incomparable, precious"
"intelligence, wisdom, mental power"
"golden-yellow color"
"determination, firm resolve"
"life force, vital energy"
"trustworthy, faithful, honest"
"dark-complexioned (via Melania)"
"religion, religious"
"dawn, morning light"
"fortunate, happy"
"gracious, generous"
"worthy of being praised"
"forest, woodland"
"pleasant, charming, agreeable"
Similar sound: These names share phonetic patterns with Radhya — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Sanskrit origins, giving them the same cultural heritage as Radhya.
Rhythm: Radhya is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.