3 aircraft and 4 cabin layouts, from the 737 MAX 8 to the 787-9. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 3 Neos aircraft here: the Boeing 737 MAX 8, the Boeing 737-800 and the Boeing 787-9.
The Boeing 787-9, with 359 seats: 28 Premium Economy and 331 Economy in its main layout.
The Boeing 787-9 has Premium Economy in at least one layout.
The Boeing 787-9, with 32" of seat pitch in Economy and seats 17.1" wide.