Toyo, Cooper, and Kelly are not exactly "minor" brands, though, they are not exactly Goodyear and Firestone.
Chinese manufacturers of knock-offs are known to take shortcuts. I would never impune all Chinese manufacturers as many are good. Not too many years ago a Chinese made tire sold by Tire King on the East Coast was recalled due to a lack of a ply led to tread separation. Please don't give me grief about my lack of expertise on tires. There are multiple plies, belts of steel, kevlar, and polyester. There is natural rubber and carbon black. There are so many ways to take shortcuts and still end up with a tire that looks - and perhaps feels - like the real thing.
No way would I try to cheap out on my tires. House brands at Discount are probably OK, as long as I know they are made in the USA where I feel a bit more optimistic about all the necessary components being included. Yes, there have been recalls on tires made in the US and Japan. (Recall Firestone/Bridgestone about ten years ago.)
I invite any tire gurus to please back me up on this. Explain how tires are made and list a few of the many shortcuts that can be taken. Personally, I'll live with a few less bucks in my pocket rather than die saving $100 on a set of tires.