Akash sits next to 4 phonetic neighbors — Arash, Aakash, and Prakash are the closest matches by sound. Most share Akash's Indian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sky, open space"
"auspicious, sacred, benevolent"
"he who humbles mountains"
"destroyer of inner enemies"
"brilliance, luminous"
"one who has attained liberation"
"auspicious, blessed"
"poet, wise one"
"skilled craftsman"
"divine water (Zoroastrian)"
"one who struggles bravely"
"auspicious, fortunate, blessed"
"limitless, infinite"
"sun, sunshine, solar radiance"
"complete, whole, all-encompassing"
"vital energy, good health"
"one who has a portion of glory/excellence"
Similar sound: These names share phonetic patterns with Akash — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Sanskrit origins, giving them the same cultural heritage as Akash.
Rhythm: Akash is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.