oh god!
super cool project!
Ok i'll give you my super italian experience! 
I recommend these artists:
Andrea Pazienza
(the great <3) in italy is like the great master of independent comics, maybe he's the one who truly point out that comics can be ART in italy
Gipi (pretty contemporary)
he's a awesome artist , and he study and experiment a lot with the lettering and the general text
Guido Crepax:
beware is P*rn af, but the style that he used to compose the panels and the pages were very inspiring
Sclavi
(it's not graphic novel)
But he's the autor of Dylan dog aaand he's the one who rose his hand and said "maybe we can create something different from serial comics? maybe something that is not spaghetti western ?"
I don't know, just some hint to make your project more pizza flavoured
hope to help and God luck!