If the dropping of the narrator is unclear, this is mursal khafī.
If the dropping of the narrator is clear, this is mursal wāḍiḥ.
A musalsal ḥadīth is one in which all narrators agree in wording, action, or characteristic at every link in the chain.
Names of narrators written identically in Arabic script but distinguished by dots or vowel marks fall under the muʾtalif and mukhtalif category.
Where narrators share a personal name but differ in their fathers' names, or the reverse, the case is termed mutashābih and admits several sub-types.