Here is a snapshot of an interactive map of downtown Newark. This map was created earlier in the 2000s and though it labels many things, it does not capture the essence of downtown Newark today. Here is the link to the map.
On the bottom left, there is a link that leads to a map with highlighted building sections in downtown Newark. I think that this would be the form I would be aiming to emulate the most as it is simple, but, shows the viewer the relation of buildings to each other. The link to the map is here.
So far, many of these maps are heavily focused on Downtown Newark. This is probably due to the fact that these maps are made for visitors and people who are only in Newark for a short period of time. Consequently, the maps only show the “best” parts of the city and forces out other areas it deems unimportant.