Aegon sits next to 3 phonetic neighbors — Aiden, Egan, and Aagon are the closest matches by sound. Most share Aegon's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fire and blood (fictional Valyrian)"
"strong as a wild boar"
"craftsman, carpenter"
"dark foreigner; dark stranger"
"an extremely large, uncountable number; boundless"
"wise one (from connection to sacred well)"
"dawn, morning"
"barley storage"
"from the valley"
"noble estate"
Similar sound: These names share phonetic patterns with Aegon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Fictional High Valyrian origins, giving them the same cultural heritage as Aegon.
Rhythm: Aegon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.