Mega sits next to 4 phonetic neighbors — Megan, Vega, and Peta are the closest matches by sound. Most share Mega's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"great, mighty, large"
"noble, God is my oath (from Elise/Sherise roots)"
"worthy, proper, fit"
"God will establish, raised by God"
"here she is, present"
"God is gracious (from Shawn)"
"who is like God (possible Hebrew variant)"
"desired, longed for"
"Child of many beauties; people child"
"shadow; shade; American variant possibly related to Shada (pelican)"
"Reddish-brown color; cuttlefish ink; from Greek sepia meaning cuttl..."
"ebony wood; deep black beauty"
"people, nation; beautiful and beloved"
Similar sound: These names share phonetic patterns with Mega — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Mega.
Rhythm: Mega is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.