'Sylte' is meat in aspic - with a high meat ratio. The Danish version is made with boiled pork, in smaller pices like pulled meat, and the meat traditionally comes from the parts of the pig that couldn't be cut up in larger pices, like the head and feet. I think it tastes all right if it's mostly pieces of meat and little aspic, but it really depends on the cook. I would only eat home-made. Minced veal doesn't sound very nice.
Lutefisk and surströmming is vile IMHO.
What on earth is head cheese? Sounds weird