Alas.......... the mysteries.....: )

You could do this:

You could post the floor plan for "the newly built house"

The floor plan is the picture you upload of the paper that has the feet and inches for the rooms ......family room , dining, bedrooms etc.

You could give us a sense of your style, what you want your home to feel like, look like.

If you have PICTURES of the "newly built " house, you upload those as jpegs. Not screen shots. But again? They don't inform the actual sizes of the spaces. Everything is about what fits, and what fits WELL.

Then .......IT IS ABOUT FUNCTION and the style and flavors you FAVOR.

So.........you provide more context to your question, and back to you comes the help.

If you want comprehensive assistance, use Find Pros on this site. This forum is good if you have some existing furniture and ideas that you want to flesh out or run by others. If you don't know where to start you should hire someone. It is a lot to furnish a whole house. You probably already have decision fatigue just from the building process.

The other option is to start looking at furniture in stores in your area and se what you like then either take your chances with the on sitre designer they have or hire one and show them the styles you like. Use your phone to take pics of things you like it will give a designer some clue as to your style. Please leave AI out of this whole process.