The IKEA Ivar is one of my favorite products from Ikea. I've used them in various configurations in my garage and my office over the course of many years. First, they're solid wood, which I prefer over MDF. They're super easy to assemble. The shelf systems come together very quickly, although the drawers & cabinets require a little extra time/effort. For the drawers, I recommend you go ahead and purchase/install these little drawer wedges which are worth it:
freshchalk.com/MischaGal#18725 There are so many configurations, it's a great system for almost all spaces. And if you look up Ivar hacks, you'll see some really fun options for personalizing the minimal aesthetic.