IKEA dark brown/black:

16 square, square unit $50 ikea.com/us/en/p/kallax-shelf-unit-black-brown-10275862/#content

8 square rectangle unit with 4 doors $50

https://www.ikea.com/us/en/p/kallax-insert-with-door-black-brown-60278170/

Light 4 square - 2 available - $25ea $40/pair

For more details on what these are: ikea.com/us/en/cat/kallax-series-27534/