Canon sits next to 3 phonetic neighbors — Cannon, Kanon, and Canyon are the closest matches by sound. Most share Canon's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"rule, measuring rod"
"crooked nose; bent river"
"white meadow"
"buck's meadow, deer clearing"
"glory-power"
"battle, fighter"
"son of Bray (from Celtic bray: brave)"
"fair, white, bright"
"at another time"
"son of Thomas, son of the twin"
"one who serves"
"clay town, clay enclosure"
"son of Adam"
"from, of (noble German particle)"
"strong and kingly"
"lasting, enduring"
"settlement of a sword-bearer"
"righteous, just"
"counselor, advisor"
"God is gracious and humble"
"God is most high"
Similar sound: These names share phonetic patterns with Canon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Canon.
Rhythm: Canon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.