I think I'm officially giving up on trying to clean the baked-on grease in my air fryer. I might leave it downstairs at the "free to good home" shelves in my building and go buy a new one. It's a shame because it's a pretty good one but cleaning it sucks (and I was lazy for too long and now it needs more serious attention than I'm willing to give it.. I've tried a few things but I'm done).
Note that is one of those times where I think of doing something, write about it online then will likely have bought the new one inside of an hour or so. That's just how things happen here.
Screams in 'waste not, want not'. Still, I do understand how bloody hard it is to clean baked-on grease. I assume you have tried all the various iterations of baking soda? And oven cleaner spray?