First, I guess I'm a bit confused as to why you would labor to make a drawing of something that is already available online. You can view the actual layouts of the Trans/Dorm
here (Upper level) and
here (lower level).
Next, to answer Robert's question, there are indeed two variations of the dorm car. The bulk of them are as pictured in the links above. However, there are a few where the H-room does not exist. Instead there is a large power room for the ladies, complete with attached shower. The two toilets on the top of the diagram on the lower level don't exist. And the toilet to the left on the bottom of the diagram is for men only and it has the attached shower. There is no shower attached to the upper level toilet in this variation.