Last year began Spider-Verse, an event that brought together different dimensions of Spider Men to face against Inheritors, villains that feed on the vital energy of the totems of the spider.
However, this is not the first time we can see different types of Spidermen (Peter Parker) simultaneously, for Marvel on more than one occasion we presented the "Clone Saga" event where Peter Parker has to face copies of himself which have their memories and with the idea that they are the original version.
While there have been different in general the history of these sagas is based on the premise of clones created by Prof. Miles Warren (The Jackal) who seeks revenge for the death of Gwen Stacy.
Moreover, the Ultimate universe introduced its own version of the "Clone Saga", in which Otto Octavius would be responsible for altering the DNA of Peter Parker to create his own super-powered beings.
So take a look at Spider-Man clones seen in Traditional and Ultimate Marvel Universe.
Skeleton Spider Man Cloned
Spiderman (Peter Parker Original) vs Scarlet Spider (Ben Reilly)
Richard Parker (Ultimate)
Jessica Drew (Ultimate)