SF Dept of the Environment has a new site with drop-down menus detailing what goes in which bin: https://sfrecycles.org/

There are some new things for the blue bin, like paper milk cartons, coffee cups, soft plastic bags (in a bag) and old textiles. Complete lists at above link and also here: https://www.recology.com/recology-san-francisco/sorting-guides-and-signage/