Andy sits next to 4 phonetic neighbors — Andie, Sandy, and Mandy are the closest matches by sound. Most share Andy's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"defender of men, brave"
"God may protect"
"ray of light, wise guardian"
"of God, divine exaltation (via -iah suffix)"
"lion of God"
"hazel tree by the woodland clearing"
"my joy, my song (Hebrew Roni)"
"given life by Zeus"
"peace; from Ireland"
"woodland, of the forest"
"apple"
"remarkable story, myth"
"coined name, aspirational"
"charcoal maker, coal merchant"
"lead-colored, blue-gray"
"modern tribute name"
"path dweller (feminine form)"
"high chief of heaven"
"bearer of good news"
"my father is Yah"
"possessing goodness, kingly"
Similar sound: These names share phonetic patterns with Andy — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Andy.
Rhythm: Andy is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.