Steel can work really well with seasoning, but not stainless steel. I have a steel griddle top and a steel pizza pan that are well seasoned now to being mostly non-stick.

I don’t know what kind of steel you’d call them but probably not carbon steel nor stainless steel

(although I don’t see the benefit of steel)

I could be wrong, but I think carbon steel skillets and woks are supposed to be treated the same way as cast iron.

Yes. Aluminum sheet pans for baking and roasting are awesome. They take a seasoning really well and when fully seasoned to a dark brown/black they become amazing tools for browning and roasting foods!