Most (if not all) of the Deluxe Resort "Suites" are classified as CL, plus the Suites in Gran Destino Tower. While not overly abundant, most deluxes have a variety of different types/sizes with varying guest counts. Many of the suite types are bookable on Disney's website, although some aren't listed and can only be booked by calling.
Sleeping surfaces/configurations vary and there are outliers on either side of these, but roughly speaking most of the 1BR Suites can hold 5-6 adults and 2BR Suites hold 6-8 adults.
There are variations among the resorts as to suite locations on the CL floor or not, etc so it's sort of hard to hit every detail without being resort specific.
Probably stating the obvious but Disney suites are sort of annoyingly expensive and renting DVC points or booking a Villa via a cash reservation for one of the larger accommodation types will generally be cheaper (sometimes much cheaper)... but if looking for a nicer room, Club Level, and the ability to hold multiple parties, Disney Suites can be a good option.
I'd generally recommend to start your planning with resort/location preferences first, then get into room types/configurations that may work with your party.
Happy to get into any of the resort specific details if needed.