I am not sure I understood your request but you'll correct me if not
You want something to show you all the dungeons and raids and information about the bosses in them and such?
If that's the question a good place to start is the in-game "Dungeon Journal".
Default keybind to bring it up is - I think - 'J'.
Except from information about the lore of the place, the bosses their abilities and their loot, there's also a map icon that upon pressing will show you the location.