I'm afraid I don't get into all the crazy formulas others come up with. I'm pretty straight forward. These pieces do have two finishes , pre-cat where not touched and polyurethane where there are. Some finishes are harder and cannot be touched up as easily and others are.
Nice work. Stepping out of the box like you've done moves you up the ladder as woodworker. Many get stuck and can't move forward. Playing it safe will keep you from landing furniture jobs…
I got forced into retirement, so I only occasionally dabble in woodworking.now..