It sounds like you were aiming to produce soap with specific qualities. My approach has been a little different. I aimed to produce soap recipes with distinctly different dominant qualities. Doing that has helped me to understand what specific fats bring to soap in the context of mixtures, rather than as single fat soaps. For example, I’ve made very hard bars by giving up some (or a lot) of soft oils, but I now know that I will like a hard bar better if it includes a fair amount of linoleic FA (maxed out at 15% for now) rather than mostly oleic. I’ve also compared bars with 0, 5 of 10% castor, and bars with lard vs. palm vs. butters vs. soy wax as the main source of palmitic & stearic FAs. I’ve also made 100% olive oil soaps and soaps across a range of OO concentrations. I just recently started testing a tallow/lard combo as a base and can tell already that it’s different from a lard based soap of the same age, even when the stearic and palmitic numbers are similar.