My favourite company for back-engineering attempts is German company Viana. They make a huge range of vegan faux meaty things, and all of the ones I’ve tried are scrumptious. They use less processed ingredients (like tofu & wheat gluten), rather than stuff like “isolated soy protein”, which makes back-engineering easier.
Tonight we had Viana “Chickin nuggets”. They were good-sized and had minimal coating on them, which made them seem very substantial. The flavour was a bit different to other faux chicken things I’ve had, not as “chickeny”, but very tasty nonetheless. I’d definitely buy them again (if I can’t figure out how to duplicate them, that is).