Kraft Foods does have safe labeling however they have shared lines with all of their products

Mars Practices Safe Labeling but does Cross Contaminate. Likely CC wit Wheat, Peanuts and Tree nuts. READ LaBEL

This company not only cross contaminates gluten and nuts but also does not list possible contaminates in labeling

Sabra CC and does not label for it. They claim to clean between batches but many people have reported reactions. Tree Nut allergy.

Trader Joe's does Label well however uses shared lines which is why lettuce will say may contain all 8 top allergens.