Frecciarosa are included its just a brand for the Highspeed services of Trenitalia 

Thanks!

Please note, that currently the Frecciarossa trains Milan-Paris are not included, but sometimes are the tickets cheaper than the Interrail Reservation for the competitor SNCF TGV InOui on this route.

ALL TRAINs in GB are included-the company names change quite often due to the rather strange ways the Brits organise their trains. EXcept (as/en/ is a rather confusing language) underground=metro in LON and Glas and trams. And for now the LuMo low-cost trains newly set up to run LON-Edinb (beside the hourly and very accessibly LNER trains)-they should also open up, but have not yet designed a way to do that-plus that about noone will even know about them out of this island.