Nirvaan sits next to 3 phonetic neighbors — Nirvana, Nirvan, and Nirvan are the closest matches by sound. Most share Nirvaan's Indian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"liberation, enlightenment"
"enlightenment, awakening"
"entertaining companion, engaging conversationalist"
"one touched by good fortune"
"he whose purpose is fulfilled"
"announcement, proclamation"
"victory, divine triumph"
"bright, radiant"
"poet, wise man"
"sacred primordial sound"
"an epithet of Lord Shiva"
"valor, bravery, courage"
"part of Rudra, fragment of Shiva"
"noble, honorable, of noble birth"
"one with steady wisdom"
"with balanced purpose"
"divine fragment"
"victory, prosperity"
Similar sound: These names share phonetic patterns with Nirvaan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Sanskrit origins, giving them the same cultural heritage as Nirvaan.
Rhythm: Nirvaan is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.