The recipe for steel using ores has a manganese ore with a yellow slot next to it indicating it would be iron ore, but nothing is there and the uses for iron ore does not show use in making steel. Recipe seems to be broken.

I am assuming you are using latest Mythic Metals for 1.19.2?

Latest for 1.19

Thanks for opening this issue. This went under the rug after migrating most of the common forging recipes to Alloy Forgery.
I have fixed it and it scheduled for next release.