Todd sits next to 3 phonetic neighbors — Tod, Tad, and Rod are the closest matches by sound. Most share Todd's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fox"
"marshy land by a lake"
"sky, heavens"
"from Airelle (a place in Normandy, France)"
"growth, abundance, increase"
"modern blend: bright house, highest point"
"of the Vergilii clan, flourishing"
"wealthy protector"
"fair-haired, blonde head"
"people's champion, victorious one"
"son of Otto, helpful"
"victors garland"
"from the burnt clearing"
"deer-friend, divine spear"
"peaceful, tranquil"
"forest"
"son of Jack"
"spear, acquired"
"devotee of Saint Columba"
"lord, father, sovereign"
"crown, wreath"
Similar sound: These names share phonetic patterns with Todd — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Middle English origins, giving them the same cultural heritage as Todd.
Rhythm: Todd is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.