Nidhi sits next to 4 phonetic neighbors — Nidi, Nidha, and Niti are the closest matches by sound. Most share Nidhi's Indian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"receptacle of divine riches"
"Pleasing, charming, delightful"
"the wind deity"
"relating to Manu (humanity)"
"grace, subtlety"
"army, face (symbolizing strength)"
"first rays of the sun, dawn"
"of the Ganges, daughter of sage Jahnu"
"peaceful, secure"
"musical instrument (vina), sacred to Saraswati"
"strength, power"
"of high character, virtuous"
"goddess Parvati, consort of Shiva"
"work, activity, to cultivate"
"moon"
"feather, quill"
"gift, present (related root)"
"liberation, spiritual release from the cycle of rebirth"
"horse, swift as a horse"
Similar sound: These names share phonetic patterns with Nidhi — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Sanskrit origins, giving them the same cultural heritage as Nidhi.
Rhythm: Nidhi is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.