I have the Instant Pot branded air fryer lid for the Instant Pot, and it does a good job. It's great for things like frozen fried things (egg rolls, etc.). But it's really a single serving sort of appliance size for those sorts of things. It has 2 layers, round 7" in diameter. Using both layers at the same time is a bit tricky and involves removing the (hot) inserted rack -- I've found a combination of a chopstick and tongs to be the best overall option. For a true sheet pan type dinner, in this, I think you would be limited to what you can get into one 6" round cake pan. Other top loading air fryers have a similar capacity problem from what I read about them while researching the air fryer lids. I only went this route for compact storage and baking possibility in a van-conversion RV where space is limited.
I think the front loading ones are a much better option. And if you are going to go that route, air fryers are really just convection ovens. And there are now combi-ovens, which combine convection with the possibilty of steam/moist heat, which has all sorts of baking possibilities.