The best method I know of will never be used. Nothing wrong with stones, stropes and hardened metal steels, but they aren’t needed.
A buddy and his wife wanted to learn something different and worked in a processing plant one summer during college - all they did all day, every week for those three months is bone meat with a 6” Forschner knife and white ceramic steel. Entire meat plants function solely on white ceramic steels.
Some summer jobs have sections of boredom and some of us whittled on wood, some played air guitar to 80’s rock, some talked non stop about stupid stuff, and I enjoyed sharpening pocket knives, everyone’s knives, with a round diamond pocket hone. I didn’t know it at the time, but consistency makes all the difference when using a round ceramic or diamond steel - consistent angles speed up the process 10x and make or break the user.
Fast forward a couple years and my friends who worked at the meat plant were now cutting wild game professionally and I was hired to skin animals coming in. At first they poo pooed my diamond pocket hone, but once they saw I could keep a shaving sharp edge with a few light strokes between each animal, they saw no advantage to me using one of their ceramic sticks.
That was three decades ago and to this day I still use a full length diamond “steel” in the kitchen. Heavy pressure and it cuts more, lighter pressure and it just keeps the edge straight. I even upgraded to a professional quality model from a knife supplier. Simple. I’ve come to appreciate a ceramic is just a less aggressive abrasive than a diamond, so if diamond hones were never invented I’d use a ceramic and be just as happy.
Since it works so well for me it’s human nature to assume it would be easy to teach others something so simple and once they saw its effectiveness they would want to learn. Nope. In my lifetime of showing dozens and dozens, if not hundreds of people, even close relatives, by actually sharpening their knifes, not a single person has become good at it, or kept with it. Both our kids and the father in law were gifted professional round diamond hones and they see the process all the time, but they have zero interest in sharpening that way. Nada, zip, zilch, “0”. I believe with all my heart, that unless someone is in a professional kitchen or butcher shop and is forced to sharpen with a ceramic steel, it will never be picked up. Lol