Acer sits next to 4 phonetic neighbors — Ace, Asher, and Ajax are the closest matches by sound. Most share Acer's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sharp, keen, pointed"
"strife, discord"
"the number seven"
"son of good fortune"
"virtuous, without wickedness"
"army home, warrior land"
"elaboration of Princeton, from Prince + ton"
"fortunate, good"
"my messenger, my angel"
"strong lord, fierce chief"
"one who lives by the gable end"
"oak grove, oak tree"
"fortunate king"
"gatekeeper, one who lives by the gates"
"possession, acquisition"
"son of David"
"to be filled with wonder and admiration"
"clearing in the forest"
"fern plant (feathery frond)"
"son of Jeffrey, son of peace"
Similar sound: These names share phonetic patterns with Acer — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin adjective origins, giving them the same cultural heritage as Acer.
Rhythm: Acer is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.