Home decor help!

So my wife and I are in the process of closing on our new home. We love the layout of the home, but we’re really struggling with how we plan to decorate some of these rooms. Our goal is to decorate in sort of an “old money” style. Dark colors, moody rooms, wood trims/accents, leather furniture, etc etc. Also note that none of the decor in these rooms are ours currently. Rooms will be empty and we will likely repaint as well. We appreciate any feedback or suggestions on how these should be!