All trains operated by Trenitalia are included, regional networks like Trenord too. The pass is however not valid on .italo high-speed trains and a few exceptions : https://www.seat61.com/interrail-and-eurail-reservations.htm#Italy

The only map Eurail produce is this https://www.eurail.com/content/dam/pdfs/Eurail_map_2022%20RGB.pdf

which is not very detailed at the country level especially for places such as Italy with a dense network in many regions.

You will have to look elsewhere for good maps, comprehensive free maps can be hard to find for many countries.

The best rail map I have been using is this: https://www.openrailwaymap.org//mobile.php

It won’t show you which routes are included in Interrail but you could use it in connection with the rail app.