Riddhi sits next to 4 phonetic neighbors — Ridhi, Riti, and Rhea are the closest matches by sound. Most share Riddhi's Indian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"prosperity, good fortune"
"fish-eyed (one with beautiful, long, curved eyes)"
"dew, morning mist"
"radiance, brilliance, light"
"earth, the world"
"little goddess of prosperity"
"dear, darling (diminutive)"
"unbeatable, invincible"
"swift moving river"
"victorious, triumphant"
"flowing water, movement"
"divine feminine energy"
"possibly related to five (ainthu) in Tamil, or a leader"
"of the Aryan people"
"unique creative Latin American name"
Similar sound: These names share phonetic patterns with Riddhi — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Sanskrit origins, giving them the same cultural heritage as Riddhi.
Rhythm: Riddhi is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.