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"
"friend, ally (Dakota root)"
"my strength is Yahweh"
"from the angel clan"
"the foremost one"
"will and fame"
"he judged, he governed"
"elf counsel, wise counselor"
"short form of Orlando, famous land"
"of the royal dynasty"
"smooth, refined texture"
"phonetic blend (possibly new house, or river)"
"ripe, free"
"prosperous ruler"
"God is gracious"
"flower (disputed folk etymology)"
"joined, attached"
"fair, white, bright"
"supplanter, one who follows at the heel"
"lion man"
"savior, one who saves"
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.