+1
If you're looking for lower-budget fare in action and horror, look no further than these:
Fabrizio de Angelis (Karate Warrior, Karate Rock, Killer Crocodile). He's produced Fulci and Castellari but has done directing of his own. He went by a pseudonym, "Larry Ludman".
Antonio Margheriti (Death Rage, Yor: The Hunter from the Future, Jungle Raiders, Code Name: Wild Geese). He used the pseudonym "Anthony M. Dawson"
Luigi Montefori (Metamorphosis), also known as George Eastman.
Vittorio Rambaldi (Primal Rage, Decoy)
Bruno Mattei (Robowar, Terminator 2 (No NOT that one!), Cop Game). Used pseudonyms like "Vincent Dawn" and "Michael Cardoso" and even "David Graham" for a softcore rom-com "Three for One".