Who will be in the delivery room with you?

My mother is for some reason just assuming she will be there. But I'm really not sure that I want her there. Her and I clash SO hard when we're together and I think it'll stress me out more than it'll calm me down. 
My mother in law has also asked me several times already if she gets to be there for the delivery. I guess I just have a super hard time telling anyone no. What are your plans for who will be in the room while you deliver?