You can grow oyster mushrooms at home, there are nice ready made kits to buy.

Seitan is the first that comes to mind.

Not indigenous, but similarly simple is TVP.

You boil it in vegetable broth, press out a bit of the water and then you can prepare it like meat.
If you can get it in steak shape and sear it in a pan, it does taste quite a lot like steak, basically because of the Maillard reaction making the protein taste fried, and because TVP is similarly chewy.

Soy, seitan, tofu to a lesser degree.

Soy can be bought as chunks, for example, soaked in hot water and then torn to strips. These can be fried in a pan with a little oil and garlic and salt for an amazing taste and texture. If you to be fancy about it, you can probably marinate them after soaking, though the strips will absorb the marinade a little better.

Seitan can be bought as a powdery mixture that you mix with water to, essentially, get a dough that you can knead and cut into pieces of your choosing. An easy marinade could include a barbecue sauce, garlic and spices to your liking to get that classic barbecue meat taste. Fry it in a pan and you're golden.

I'm a sucker for tofu, so I'm usually good just frying it in a pan or panini press, putting it in the oven, or just eating it raw in combination with soups and stuff. But of course you can marinade tofu really well too. Just make sure to drain the water beforehand and maybe add (corn) starch for extra crispiness when frying.

Happy cooking!