The way I see it, most of the dual algorithms are fairly simple, with few parameters to scroll through. I get good use from the crossfader, logic, comparator, min/max, 4QM, wavetable waveshaper etc. – things that I don’t necessarily need in every patch but it’s good to have them on tap when I want them.
For that kind of usage, I don’t feel like I often have to consult documentation to use several favorites. But when I do, there’s this: http://distingquickguide.rustle.works/