You get it all mostly right. Please note that I'm not concerned with line of sight and in some case I can't say wether you can see through a specific type of a door. Even a regular door (type 1) may have a small window, so it's open to interpretation.
- 3 - Entrance depicted as a staircase leading to the room.
- 5 - Locked door. The key is somewhere on the map.
- 7 - Barred door. Semantically it's the same as portcullis i.e. it's impassable.
- 8 - Exit depicted as a staircase leading from the room.
- 9 - Steps. Basically the same as type 1, but with a hint of a difference in level between the two rooms.