One of the most popular nicknames would be Pepe. Anyone named Jose, although if they use two names together such as Jose Luis they might use the nickname for Luis, will be called Pepe by many of their peers. Yes, Jose sounds nothing like Pepe. The only explanation I have been given is that Joseph (Jose) in the Bible is the padre p____ of the Baby Jesus, being abbreviated to him being called P.P. or Pepe in Spanish. If this is true, it seems hard to believe.
Men named Francisco are called Paco. Those named Luis are called Huicho. Those named Salvador are called Chava (which in slang means girl?). Boys named Ignacio are called Nacho.
The list could go on forever.