Andamo sits next to 4 phonetic neighbors — Andar, Andres, and Adamo are the closest matches by sound. Most share Andamo's Unknown-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"uncertain — possibly invented or from an undocumented oral tradition"
"raised by God, wise"
"new house (via Xavier/Basque)"
"tribute to composer Franz Joseph Haydn"
"wise protector, counselor-guardian"
"swift as a deer"
"gift of jasmine"
"cheerful, lively, in high spirits"
"of legend, mythic, extraordinary"
"of Mars, warlike"
"oak grove"
"eternal, enduring (via Khalid roots)"
"of the river Jordan"
"one island, isolated place"
"he who holds firm the good"
"gathering place, pool"
"symbol of limitless abundance"
"large homestead, big village"
"bearer of Christ"
"to tame, subdue"
Similar sound: These names share phonetic patterns with Andamo — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Unknown origins, giving them the same cultural heritage as Andamo.
Rhythm: Andamo is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.