Madden sits next to 5 phonetic neighbors — Aidan, Caden, and Hayden are the closest matches by sound. Most share Madden's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"descendant of Madan (little dog)"
"son of the cloud"
"dark, dark-haired"
"spear of God (from Oscar)"
"shelter, shield"
"famous spear"
"beam of light"
"from the western settlement"
"noble, handsome"
"son of John (via Jack)"
"priceless one"
"God is gracious"
"faithful, devoted"
"king"
"peddler, pack-horse driver"
"gift of God"
"home power, ruler of work"
"descendant of Flann (ruddy, red)"
"enduring and beautiful"
"father of light"
"messenger, herald"
Similar sound: These names share phonetic patterns with Madden — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Madden.
Rhythm: Madden is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.