Yes, many of the products share the same descriptions and names. CG will manufacturer custom products and relabel for many brands. SmartWax, Tropi Care, Danase, Auto Magic are some others that are made by them. Just because they are made by CG doesn't necessarily mean they are 100% the same but usually they're similar. That said, I've heard Adam's has very good customer service.
I don't like the Gels... back in the days I thought Meguir's Endurance Gel was good but lots of better stuff now. Spray tire dressings are messy. If I use it, I spray an applicator to apply.