Dede sits next to 5 phonetic neighbors — Dee, Didi, and Dedie are the closest matches by sound. Most share Dede's African-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Firstborn daughter; born on Monday"
"from Corinth"
"new beginning, sunrise"
"little rush, little reed (from the leaf shape)"
"New beginning"
"water"
"courageous heart"
"of the laurel tree, crowned with laurel"
"luminous, shining"
"from the alder grove"
"heart, courageous heart"
"victorious; conquering"
"sweet, pleasant"
Similar sound: These names share phonetic patterns with Dede — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have African origins, giving them the same cultural heritage as Dede.
Rhythm: Dede is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.