I get my sausages at Schreiners in Glendale. All fresh made in house.
They are mostly German, but also make English, Romanian, British, other European… a zillion types.
Their American breakfast links are REALLY good. Thicker (and in casing) than what you see in markets and most restaurants but not like what you have pictured there.
I have called Schreiners the happiest place on earth.
BTW, they make their own bacon and Black Forest hams.