I'd say probably out of my ocs, my Knight gal Tammarah definitely has the biggest appetite, definitely more than Lutt too. Her main issue however is she is like 5'2", so she needs a pretty strong helping hand to eat enough to approach feeling full at all. I don't usually like having a set limit in terms of what they can eat, mainly because I feel like it can limit future scenarios, but Tam easily can get to the largest size in terms of consumption without feeling much discomfort at all.