In the UK, Quorn is the main faux meat mycoprotein. I'm not a vegetarian but I have tried a few of their products and they are, without exception, all about simulating meat.
The simulated chicken pieces are probably the most realistic; so much like the real thing in terms of appearance, texture and taste it's uncanny. The steak strips aren't as good texture wise, nor is the lamb cutlet, but both are ok taste wise although to visual inspection the lamb one is obviously artificial. The sausages are good but since the meat content of real sausages is questionable anyway, I don't think there's much comparison to draw. The biggest fail is the Quorn bacon rashers. You have to wonder why they bothered trying. Nothing can compare with real bacon and we can't help vegetarians who chose to give that up.