Good rule of thumb is 1 stop speed loss for every 10 years of age, so the 1979 stuff would be about 3 or 3.5 stops slower.
I agree that 3200 stuff is probably bad, and WOW I didn't even know they made a 1600D color film, that's cool.
I'm curious about the sheet film too, and also the silver can you can't see and I can't read the one that's in the box on the bottom right.
Looks like a fun stash. That's enough film for quite a few years! Lol