Make your own. I started making my own when I did whole 30 last month and can't believe I had never tried that before. There are tons of recipes for sausage out there... just start with one and make your own adjustments until you've got your favorite spice blend.
Commercially packed sausage is full of sugar and additives and bad stuff. Making your own, you can pick what meat goes into it, the fat content, and everything. It's far superior.