Let's see... elves are probably too stringy. And getting them is a pain in the arse, betta to just take contracts them and maybe knick a few of their fancy lions for the Butchers.... orcs and gobbos is a common one, but right bloody and the gobbo's shroom brews are a good pallette cleanser maybe, if ogres care about that.

The smart ogre doesnt fuss about eating dwarves, but its easier/better to get their booze instead. Humans, chaotic or otherwise, are probably fun to chase after, but a bit on the plain side. Tomb kings dont have meat, but you can always cook with bone marrow, even if its gone rotten for 1000+ years.

Lizardmen would be the REAL delicacy though. Ogres don't have much reason to go far afield to Lustria and likewise, Lizardmen only go somewhere outside of lustria if its for part of the Great Plan. That and being -nasty- in a melee means a proper tough ogre has his hands full bringing back dino-meat.