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"
"high, exalted"
"radiant, vibrant"
"blue, sapphire"
"bright, radiant"
"seer, one with divine insight"
"part of parents, beloved portion"
"call to prayer"
"universal consciousness"
"enlightenment, awakening"
"an epithet of Lord Shiva"
"part of Rudra, fragment of Shiva"
"one with steady wisdom"
"portion of the divine"
"part of the Vedas, essence of sacred knowledge"
"descendant of Raghu; epithet of Lord Rama"
"fortunate, blessed"
"pleasant breeze, gentle wind"
"to wander, traveler"
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.