Dulce sits next to 3 phonetic neighbors — Dolce, Dulcie, and Dolcee are the closest matches by sound. Most share Dulce's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sweet, pleasant"
"star"
"pure, beloved"
"wise protector"
"delicate, gentle"
"modesty, faithfulness (flower symbolism)"
"unique one"
"goddess of flowers and spring"
"eagle power, noble strength"
"beloved"
"sky, heaven"
"protector of men"
"God is my strength"
"peace, tranquility"
"nourishing, kind"
"honey bee"
"famous warrior"
"star, celestial body"
"one who works the earth"
"soft, tender, gentle"
Similar sound: These names share phonetic patterns with Dulce — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Dulce.
Rhythm: Dulce is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.