Arbor sits next to 4 phonetic neighbors — Arthur, Harbor, and Archer are the closest matches by sound. Most share Arbor's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bower, canopy of branches"
"powerful giant, cosmic force"
"warrior (via samurai resonance)"
"brave in war"
"clear, tinkling sound"
"battle, round barrel"
"the Promised Land, holy city"
"God is my help, my flock is God"
"king's settlement"
"to rejoice, happy, glad"
"Yahweh has shown favor"
"modern variant of Milan/Milen"
"respect, governance"
"sun child, bright sun"
"famous land, fame of the land"
"carved by force, shaped by power"
"imperial authority"
"home ruler"
"modern American creation, gentle (from Kevin root)"
"my God is light"
"grey home, gravelly homestead"
Similar sound: These names share phonetic patterns with Arbor — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Arbor.
Rhythm: Arbor is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.