Welcome ElementalWindX:
The only way you can tell for sure if a wall is load bearing is to look in the attic. Your house being built in 1998 probably has roof trusses which means none of the upper floor walls are load bearing. The trusses will bear the load from outside to outside walls.
The first floor is a different story; the wall next to the garage is most likely a bearing wall, especially if they used dimensional lumber for floor joists on the second floor. It is possible that they used floor trusses that can give a clear span also. If it has floor trusses, you will need to find the source of them and ask the manufacturer if they are 'clear span' rated. In either case the walls limitiing your Living room typically would not be load bearing. The Hallway and Extra Closet walls will not be load bearing if the joists run right to left on your drawing.
Glenn