Maximum malignant potential is in –
Superficial naevus
Epidermal naevus
Junctional naevus
Intradermis naevus
Amongst the given options only junctional naevus has malignant potential.
Following melanocytic naevi can transform in to malignant malenoma

Malignant potential is maximum → congenital melanocytic naevus, and dysplastic (atypical) naevus.
Malignant potential is less (but present) → Junctional and compound nevus.