Ishaan sits next to 3 phonetic neighbors — Ishan, Ashan, and Keshaan are the closest matches by sound. Most share Ishaan's Indian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sun, one who bestows riches"
"little red-haired one"
"brother"
"speed, path"
"one who has achieved enlightenment"
"grace of God, king"
"priestly, wise one"
"land of purple, merchant"
"constant, faithful"
"prince, commander, ruler"
"God is gracious"
"cosmic creative principle"
"cheerful, optimistic"
"exalted nation (from Hebrew Amram)"
Similar sound: These names share phonetic patterns with Ishaan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Sanskrit origins, giving them the same cultural heritage as Ishaan.
Rhythm: Ishaan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.