Adan sits next to 4 phonetic neighbors — Adam, Aiden, and Adan are the closest matches by sound. Most share Adan's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"man, human being"
"pleasant, amusing"
"may God protect, held by the heel"
"God will establish"
"lover of horses"
"great warrior, one who cuts down"
"beauty, grace"
"light"
"comforted by God"
"famous brilliance"
"dear one of God"
"my God is Yahweh"
"rich spear, lucky warrior"
"altar/hearth of God"
"lion"
"defender of men"
"brave as a lion"
"God the highest (variant interpretation)"
"strength, manly beauty"
"requested of God"
"God is my light"
Similar sound: These names share phonetic patterns with Adan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Adan.
Rhythm: Adan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.