I consider myself a carnivore & frequently experiment.

I have found that cream, milk, "keto" ice cream & cream cheese seem to stall out my weight loss.

Butter, ghee (as cooking oil), plain yogurt, and cheese (particularly Muenster and goat & sheep cheeses) seem not to do so.

I suspect that removal of milk sugars (by bacterial action or human refinement) is the distinguishing factor.