By most accounts, the Ironwood Series has been the most popular series of furniture in Animal Crossing; when New Horizons first launched, it was by far the most obsessed-over furniture items, as it wasn’t available for purchase, it had to be crafted from a recipe you got from a snooty villager.
The “Ironwood” series is basically a mash-up of a few real-world styles, but in general it’s a combination of two main styles: “rustic industrial” (the dark iron frame) and “modern farmhouse” (the wood top and wood tones).
The only real furniture items I could find widely available that looks exactly like Animal Crossing is this table that looks exactly like the Ironwood Table.