If you're in the market for buy-it-for-life solid wood furniture:
https://vermontwoodsstudios.com/
https://hedgehousefurniture.com
https://www.57thstreetbookcase.com/ (all bookcases, some veneer and plywood)
https://www.spekeklein.com/home
https://roomandboard.com (mix of solid and veneer, some MDF)
These makers are in a league of their own, very expensive, incredibly beautiful hand-made pieces:
https://www.sammaloofwoodworker.com
https://www.thosmoser.com (highly recommended)
https://nakashimawoodworkers.com (new commissions around $7K-$15K for a coffee table, $20K-40K for dining table, plus shipping; older Nakashima pieces are highly valued in the art world and sell anywhere between $15K-$300K)
https://www.wright20.com/search/nakashima/items#past
I used to own a lot of IKEA furniture and as I've gotten older, have slowly replaced those pieces with items from Knoll, with custom pieces from local woodworkers, with a few pieces from the studios listed above. Yes, they're expensive.
But if you like art and design and you care about quality, you save for what you want to buy. I wanted to be surrounded by great craftsmanship, so instead of buying "stuff" and instead of spending money on lots of subscriptions and services, or constantly upgrading phones and computers, I buy one piece of nice furniture every year. I believe the more you appreciate the things around you, the more they begin to influence your own work, and your sense of place.
I regularly see a lot of IKEA furniture on the side of the road and in dumpsters. I think this is the difference between buying "things" and having "possessions" but that's a discussion for another day.
PS: Find a local woodworker, they'll build what you want and it'll be better than anything you can buy at the store.