Other studios or production houses that have interim deals with the WGA include United Artists, Worldwide Pants (David Letterman's company), The Weinstein Company and more. A complete list can be found at the link below.
With these high profile deals, along with the very recent Directors Guild of America's deal (DGA) with the Association of Motion Picture and Television Producers (AMPTP) and major studios, I think we may see the strike ending soon, in a way that benefits everyone. Plus, the WGA and AMPTP have come back to the table, after talks broke down more than a month ago.
Source: Superhero Hype!