Draco sits next to 3 phonetic neighbors — Drake, Draco, and Draconian are the closest matches by sound. Most share Draco's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"dragon, serpent"
"great, venerable"
"from the river Blaan"
"God has built, Yahweh has built"
"immortality, eternal life (symbolic)"
"worth, worthiness"
"mill town, settlement by the mill"
"God enlightens, He shines"
"rigid airship (named for Count Ferdinand von Zeppelin)"
"Zion variant, promised land"
"Yahweh sees"
"of Dionysus, god of wine"
"jewel, gem"
"charcoal maker"
"nobleman of the second rank"
"flax, flaxen-haired"
"son of the red warrior"
"crew, team"
"spear warrior"
"one who builds"
"noisy disturbance, civil commotion"
Similar sound: These names share phonetic patterns with Draco — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek/Latin origins, giving them the same cultural heritage as Draco.
Rhythm: Draco is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.