I found these all in one digest! Note that I added Archie's patented barely-disguised celebrities too...
List of companies, brands, organizations, entertainments, fictional characters, celebrities, etc. in the Archie Universe(s)
Companies & Brands
89 Flavors -- An ice cream shop in Riverdale. Part of a chain? It's not clear if 89 Flavors is the store's name or just a prominent slogan. Based on Baskin-Robins (with their famous "31 Flavors"). Jughead & Friends Digest Magazine #17 (R)
Gran'ma Jones Chocolate Shop -- A candy store in Riverdale. Apparently no relationship to Jughead Jones. Jughead & Friends Digest Magazine #17
Nosher Chocolate Company -- A candy company know for their boxed chocolate candies. Jughead & Friends Digest Magazine #17
Organizations
Etruscan Vase Society -- Organization for collectors of Etruscan vases. Mr. Lodge is a member. Jughead & Friends Digest Magazine #17 (R)
Entertainments and Fictional Characters
Green Antler, The -- A comic book super hero. Created by Hugh Kendraw. Jughead & Friends Digest Magazine #17
Human Brick, The -- A comic book super hero. Created by Hugh Kendraw. Reminiscent of the Thing. Jughead & Friends Digest Magazine #17
Rat Girl -- A comic book super hero. Created by Hugh Kendraw. Jughead & Friends Digest Magazine #17
So You Wanna Be a Super Hero? -- A TV reality show. Hosted by Hugh Kendraw. Based on Who Wants to Be a Superhero? Jughead & Friends Digest Magazine #17
Celebrities