Audi sits next to 4 phonetic neighbors — Audie, Oddie, and Rudy are the closest matches by sound. Most share Audi's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"old friend, noble strength"
"industrious ruler"
"place name turned given name"
"cotton plant, soft white fiber"
"island of goats"
"wide, broad"
"tile or clay worker"
"perfect joy, supreme happiness"
"cause of rejoicing"
"the Lord's house; a place of Christian worship"
"of the mountain"
"rock, stone"
"full of life, lively, alive"
"rough stream"
Similar sound: These names share phonetic patterns with Audi — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English (Alden/Aldred) origins, giving them the same cultural heritage as Audi.
Rhythm: Audi is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.