I should also start using a charcoal grill rather than propane. Would probably give them a better flavor.

We use charcoal and it's pretty darn good. We prefer to cook them until there's a 'crispy' texture on the outside, my SO doesn't enjoy softer textures and figured out a way to carefully cook them to have a bit of char. They feel even closer to beef like this to us.

I've also experimented with a griddle by smashing them thin too. Results were promising, I just haven't quite got it down yet though

I personally prefer the Impossible meat, it feels a lot more like beef than Beyond. Not to say Beyond isn't great too though