That's the great thing about chili, once you get past the basic ingredients of ground meat, tomato sauce, beans and chili seasoning, you can add pretty much whatever ya want
I start with 2 diced onions, maybe 10 mushrooms peeled and sliced, and however many cloves of fresh diced garlic i feel like that day (usually 5 or more) get the onions softened and the mushrooms nicely going and add in the garlic. Then add about 2 pounds of mixed ground beef and pork. I season the meat while its browning with salt and pepper, then add 2 cans of a 6-bean mix and strained tomato sauce. Add more salt and pepper to taste, then chili powder, chili flakes, cumin, 2 fresh red thai chilies(chopped) and a dash of sodium bicarbonate to take the acidic edge off the tomato sauce. bring it to a near boil, then turn down to simmer for about at least an hour, stirring every 20 mins or so and checking the sauce to see if it needs more of any spices.
I then serve it with chopped parsely and a scoop of sour cream, OR a few crumbles of a nice cheese. Blue cheese is my favorite but even a basic cheddar will work. Just cube it small and stir it in while it's hot and you get a nice cheesy melty goodness. Garlic toast optional.