The components each side of the core box has this home designs look complete in this form.

Expandable Design #4

Expandable #4

Comparison: The core plan for design #3, #4 share a generous side entry module. The more notable common denominator is the steeper pitch gable roof which effects a comfortable and conventional 'home' aesthetic. #3 has a more contemporary window and door treatment, and #4 enjoys a traditional rural farm house  treatment. As with so many smaller footprints the stair location sets up a lot of other planning.

This design: A distinction this plan is the stair location, which is outside the core box. This frees up the upper level 'box' space to permit 3 acceptable bedrooms, bath and a walk-in closet at the upper landing. That closet could easily be the laundry.

Style: As drawn this designs has a down home in the country look. Different  materials and colors and perhaps some increased detailing could have this design fit anywhere.