7 aircraft and 8 cabin layouts, from the A220-100 to the A350-900. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 7 ITA Airways aircraft here: the Airbus A220-100, the Airbus A220-300, the Airbus A320, the Airbus A320neo, the Airbus A321neo, the Airbus A330-900 and the Airbus A350-900.
The Airbus A350-900, with 319 seats: 33 Business, 24 Premium Economy and 262 Economy in its main layout.
The Airbus A321neo, the Airbus A330-900 and the Airbus A350-900 have Premium Economy in at least one layout.
The Airbus A321neo, with 30" to 34" of seat pitch in Economy and seats 18" wide.