SINGLE LEVEL
Viewliner Diner - 48 Seats
Heritage Diner - 40 seats
Diner Lite - 18 seats "Diner Side" (plus wheelchair space) 32 seats on lounge side. (If used as a Diner only, the side with the 32 seats is used as well).
SUPERLINER
Superliner Diner - 72 seats
"Cross Country Cafe" aka " Diner Lounge" - 40 seats diner side 16 seats lounge side.
Pacific Parlour Car - 24 seats in table section
Some variations may occur of course, especially in the heritage diners. I feel like some of the Superliner Diners may have less than 72 seats now as well.