I worked in a cleaners in high school. I learned how to use the big steam presses. I got spoiled.
I have been through quite a few irons. I remember my mother's first steam iron. It sat on the ironing board and puffed out steam every minute or so. That was on the East Coast where we had a lot of humidity.
Moved to a drier climate and never could get enough steam to suit me. Gave a friend a Rowenta to try. I said it didn't steam, she says it does. I've tried the steam generators - the Rowentas spit, the Reliable doesn't. Even a full blast of steam won't move some of this wrinkle residue. While it's mostly cottons - I've had some permapress fabric keep the residue of a wrinkle. Permapressed muslin does that. I like the stuff. I've made heirloom shirts with it. You need fabric perfectly flat to do lace insertion.
What you have ironed feels hot, but a blast of steam should feel a tad damp.