As of December 26, with the publication of the tie-in prequel novel, "The Day Before", Riverdale continuity has now reached episode 09 of Sabrina's Secret Life in the animated Sabrina continuity (which includes issues of the Sabrina tie-in comic). Riverdale will surpass the animated Sabrina continuity with episode 17 of this season (in other words, nine more episodes).
Regarding the Filmation continuity, that's a bit more complicated. As far as I know, there were no tie-in comics. As for the shows themselves, I'm not counting the Groovy Ghoulies spin-off from Sabrina, because that's just original characters. Archie's TV Funnies has little actual Archie content. The gang has a few minutes' worth of story in each episode. Mostly, they're running a TV station where they play cartoons based on comic strips. Still, I'm counting each episode in full. I have no idea if I have every Filmation story segment listed in my guide (or even if they're all the same length, but I'm treating every two segments as a standard half-hour episode (with the exception of The New Archie and Sabrina Hour, where three segments seem to have air in each hour)).
Based on all of that (and taking into account the Riverdale tie-in material), Riverdale looks set to surpass the Filmation continuity with episode 12 of this season (in other words, four more episodes) and become the largest non-comic continuity featuring the Riverdale gang. However, since the Filmation cartoons also had a Sabrina spin-off, it's fair to include Chilling Adventures of Sabrina in the Riverdale continuity in this particular battle. In that case, the Riverdale/ChAoS continuity is already larger.
The last thing to beat is the Melissa Joan Hart sitcom. Going solely by televised material, Riverdale has reached season 4, episode 03. By the end of this season, it will reach season 5, episode 09. By the end of next season, it will reach season 7, episode 09. To surpass Sabrina the Teenage Witch, Riverdale would have to last until season 5, episode 07. That's doable, I guess (I'm counting only Riverdale in this case, not ChAoS, since Sabrina never had a spin-off). Counting printed material, though, Sabrina is basically untouchable, considering the sheer number of tie-in novels.

For Christmas, I review "Holi-Daze" from Cheryl Blossom, No. 28.

I review "All Malled Out" from Cheryl Blossom, No. 19.

I review "Here We Come A Caroling!" from Cheryl Blossom, No. 19.

I review "'Ti$ the Sea$on" from Cheryl Blossom, No. 9.

This week, I review "The New Archies" episode, "Making of Mr. Righteous".

I review the Cheryl story, "Skateboardin' Blossom", from CB #26.

Wasn't there a Sabrina one-shot or miniseries announced around two years ago and then cancelled? Is this a resurrection of that?

I review the Cheryl story, "Fashion Emergency", from CB #26.

I review a few Cheryl stories for Halloween: "Psyc-Out" (CB #22), "Take the Mummy and Run!" (CB #26), and "A Midsummer's Magic" (CB #34).

This week, I review the "Archie's Weird Mysteries" episode, "Invisible Archie".

Fast Eddie's nervous now, trying to rally the troops, so they can survive bankruptcy. I doubt they will, though. In 2005, the bankruptcy laws were changed to eliminate abuses. Basically, retailers would become "ghost tenants", tying up valuable property while not using it. They would spend 1-2 years trying to negotiate. Mall owners complained to Congress, hence the revisions to the laws. Now, companies in bankruptcy have only 7 months to work stuff out. The malls wanna get the space back, because Sears has paid one of the lowest rents, because most of the contracts were signed 20+ years ago. Basically, the malls wanna upgrade the spaces and jack up the rent.

This week, I review "Twilite" from Archie & Friends #146-147.

This week, I review "The Case of the Sorrel Roan" from Riverdale, No. 3.

My review of Betty & Veronica: Vixens #10 is up.