There are a few inaccuracies and simplifications here. Lactalis is independent from Nestlé, though they have a co-entreprise for dairy. For l’Oréal, it’s a bit disingenuous to link both here because massive companies like that have a lot of mutual participations. And KitKat is manufactured by Hershey’s in the US I think.
That being said, Lactalis is equally shitty so you can avoid it anyway. And the same goes for l’Oréal. I don’t know about Hershey’s but I could bet.