Om sits next to 2 phonetic neighbors — Ohm and Aum are the closest matches by sound. Most share Om's Indian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sacred primordial sound"
"magnificence, grandeur"
"knower of the Atharvaveda; Vedic fire priest"
"conqueror, opener of doors"
"part of parents, beloved portion"
"non-dual, without a second"
"high, exalted"
"fame, glory, renown"
"new (as prefix in Punjabi names)"
"pleasant breeze, gentle wind"
"bright, radiant"
"horse-like, swift"
"an epithet of Lord Shiva"
"seer, one with divine insight"
"divine, sacred"
"to wander, traveler"
"time; yesterday and tomorrow"
"capable, able, competent"
Similar sound: These names share phonetic patterns with Om — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Sanskrit origins, giving them the same cultural heritage as Om.
Rhythm: Om is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.