It's a McCormick product.I looked it up, as well. The just list “spices” so imagine any combination could be possible. I’ll look for it at US Foods.
Cattlemen's Cowboy Rub | McCormick For Chefs®
Cattlemen’s® Cowboy Rub is finely ground and delivers a bold balance of hickory smoke, molasses and coffee flavors in a ready-to-use dry or wet format that's ideal for low 'n slow cooking and perfect for blending with Cattlemen's BBQ sauce to create your own signature sauce. For more than 50...
www.mccormickforchefs.com