Oh shit, yes I forgot Guerrieri. Who actually should be at # 5 together with Vari, Mulargia and Vanzi.
I'll include him.
Well, I'm pretty famous in the SW circle for thinking that Valerii was a weak director. Wouldn't make my top 20 despite 2 good films (not his fault that these 2 are ok)
Petroni is solid, but unimaginative.
Castellari has made too much turkeys. Only Keoma and Johnny Hamlet are showing directing skills, but have thei share of weak scenes too. Generally he wasn't good with western directing.
Baldi I should probably include for Blindman alone, but his other films are often in parts badly directed.
Margheriti, maybe, he would be the next to name.