The Any% category is trying to beat the map in the fastest possible way without breaking the concrete rules that the map creator made for the map. Often times this means that you are doing stuff on the edge of what should technically be allowed. But stuff like mining and crafting are not allowed here.
In Any% Unrestricted however, you can do anything you want pretty much. You are allowed to mine blocks, craft and do just about anything to reach the end as fast as possible. The naming is a little weird since usually any% is the shortest run. It's named this way because of the speedrun's history and because the general consensus among Mincraft custom map speedrunners is that you do not break the maps fundamental rules in the main speedrun category of the map.
All Iron Doors is currently "closed" while we are figuring out what to do with it. I took over moderator some time ago, and we are not sure what the exact rules of this category are. So we are trying to change it so it can be run again.