Nickelodeon, MTV and CBS are owned by Viacom which also has Comedy Central, VH1, BET, CMT, and TV Land, so they're in the left camp. Gillette went woke as did Goodyear, so they are on the left too. I know Burger King has also made some advertisements about the pink tax and their UK division made a public statement that they would keep selling milkshakes during the whole milkshake thing. Of course, Ben and Jerrys, Papa John's, and Dove are another few companies that also went woke.
As for on the right, I would add Bitchute, Minds, Gab, pretty much every gun company and merchant, Dominos, YUM! Brands which includes Taco Bell and KFC, Chick Fil A, Koch Industries, and hardware stores like Ace and Menards. I would also consider putting Tesla and SpaceX in the right category as Elon Musk, while still a liberal minded person, is getting more and more redpilled by the day. NASCAR is stereotypically right wing so they can go in the right category too.