My lineage is German and Polish so here's some. Headcheese, cow brains, cow tongue,, heart, liver, liver sausage, blood sausage, Charnina (duck blood soup, nasty), Kishka, and just about everything else that can be made out of a pig or a cow. Other critters: muskrat, possum (nasty), groundhog, raccoon, pigeon, moose, deer (liver, hearts, etc.), bear, antelope, elk, cuttlefish, squid, lutefisk, kimche, octopus, alligator, sturgeon, turtle, frog legs, snails, drum (nasty), and too many others to mention.
Got some sausage one time from a buddy who was from the UP of MI. It was called cudaghi and that was really nasty. I smoked some carp one time that was really gross.
I use nuc maum all the time in Asian dishes and took a swig out of the bottle one time. Don't do that.
Things in the "That is just wrong to eat" category that I have no real desire to eat: nuts (and not the salty little snacks in the cans) of any kind, horse, cat, dog, tripe, armadillo, seal, whale, walrus, grizzly bear, bugs, crow, seagull.