I’ve been feeding both of my dogs this for years. They love it!
We rotate between the yellow, purple and red bags (forget the names). The dogs favorite seem to be yellow.
We get it from Chewy.com. It’s the same price as my local dog kennel that carries it.
Victor is another very good brand. The site https://www.dogfoodadvisor.com/ does provide a good breakdown of what it is in many dog foods
Not sure how easy it is to find outside of boutique pets stores (just happen to live near a fantastic one that delivers for free) but I highly recommend the Orijen brand. Have tried numerous other “premium” brands with my dogs over the years but no matter which brand I was using, I always managed to run into at least one vet than had less than stellar things to say about brand x, y, or z. Maybe it’s just coincidence but in the 7+ years I’ve been feeding my dogs Orijen I’ve yet to encounter a vet that anything other than positive things to say about the brand.