Astor sits next to 3 phonetic neighbors — Hector, Chester, and Nestor are the closest matches by sound. Most share Astor's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"hawk"
"sea warrior, sea spear"
"son of David, son of the beloved"
"fire brand, flaming sword"
"reddish-brown color"
"new settlement"
"clean, righteous"
"of the night"
"son of Hugh"
"vigorous ruler"
"victory of the people"
"known by God"
"God is gracious (from Shawn element)"
"noble, bright"
"bright friend, fair valley"
"consecrated, worthy of reverence"
"heard by God"
"messenger of God"
"modern invented name"
"deep affection, tender devotion"
Similar sound: These names share phonetic patterns with Astor — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French origins, giving them the same cultural heritage as Astor.
Rhythm: Astor is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.