You're making me hungry!
I love liver sausage sandwiches, but don't do them very often... on rye with mustard and mayo and lettuce. I have to have lettuce on sandwiches. some kind or other. I can do without the bread, but not without the lettuce.
I can eat anchovy sandwiches. Love the salt. I would rather have them on pizza, but toasted baguette is just fine for a sub.
Sardines. Fresh is best, but I grew up eating them from the can, with all the olive oil, on white bread (with my dad for lunch on Saturday). I've never dissected them to see if there WERE any bones.