most of the protein is from soybeans i think, which is now mostly quite contaminated with residues from years of glyphosate and the beans themselves are mostly GMO, i personally get an allergic reaction from eating much of it and my cat refuses to eat it (and i've had other cats who also refused to eat it)

fat is another one, likely rapeseed is number one, second would be sunflower, and then probably refined olive oil, and then below that butter/cream and tallow

for some reason there is almost no palm oil anymore, until about 4 years ago it was one of the most common

the heat and chemical extracted rapeseed and sunflower oil are greatly increasing inflammatory chronic disease and harm nerve function, as well as damage the liver, and increase oxidative free radicals in brain tissue, which is supposed to be primarily saturated fats and medium chain triglycerides, and the disappearance of tallow (beef fat mainly, but also sheep) is affecting us because at least one thing - that is also in chocolate - stearic acid, which is a key precursor for the hormone that signals satiety

that stearic acid is a major part of why carnivore people so often report finding they are actually eating less food and their weight is normalising