For those of us that have grown up with Guidos, we know that there is no such thing as one type of Guido. A Guido is a wide range of personalities and characteristics. Of course like with any grouping, they all have characteristics that make them similar. For starters, most Guidos are Italian, have dark hair, talk with a lazy, slang, Northeastern/New York accent, and groom their body as much if not more than women do. That's about the extent to which Guidos are similar.
The subcultures that exist among Guidos are the varying attirbutes that are distinct and make a Guido a Guido, but across different options. Let's take hair for example. Guidos have 1 of 3 major haircuts: The tapered Blowout, the Puerto Rican buzz squared off in front, or the classic/old school slicked back long hair. Of course there are also the minor haircuts like the Faux-Hawk and the shaved side spiked on top, but those are common among a lot of other groups.
What about body types? Well, there's only so much that human beings can do about their bodies due to genetics, but Guidos usually fall into 1 of 2 categories: Gym loving juice heads or meatball loving fat asses.
I know there's more, but that where I'd like you to fill in the gaps.