It's like what lattice have done where for example hanging an edge with one arm is equal to 8a. Except the problem is it's not 8a and the best way to tell if you're able to climb 8a is to climb 8a.
trying to wrap my head around what workouts correspond to different RP grades.
I don't think this is a thing. You just make it harder as you get better/in order to get better.
So in essence, if you were trying to get to 8a, your finger strength regime would try to get you to hang this edge one handed. These baselines have definitely been discussed on both one and two handed hangs.
I am interested in an AnCap campus board workout baseline, hence my question regarding grades.
There is an obvious progression of difficulty as you progress through the Foot On Campus protocols on the large, medium and small rungs. Trying to complete the FOC on the small campus rungs with +15% of my bodyweight felt like trying to do links on an 8b route.
Is doing this workout sans feet on the large campus rungs akin to 8c redpoints?
I am a way better rock climber than I am a trainer for rock climbing and understanding how certain workouts ON AVERAGE pertain to a redpoint grade helps in structuring an overall training plan. For example, if you can hang the 8a edge, then just maintaining finger strength and focusing on other things will offer the most bang for the buck.
As others have said, trying to put grades to sessions may be a waste of effort and unnecessary - though I'm sure Tom R will have a measure of it, if you're willing to pay. But, sounds like you're also wondering (1) how to determine what your weakness is and (2) how to make ancap sessions progressively harder.
(1) I think Tom R has a method for this, which is something like repeatedly doing foot-on campussing/lattice circuiting to failure, resting the same amount as your climbing time. After a handful of goes you'll find that your climbing time doesn't really decrease any/much more - a 'level-off time'. I'm not too sure what his threshold is, but if the level-off time is > 15% of your max time, then your ancap isn't a weakness. Obviously it will depend on the route etc...
(2) I think the general advice is to make them harder, not longer or with shorter rest. I guess it's just a bit of a skill to make things a little bit harder every time. My advice would be to aim too easy at first, and build from them.
Other bit of general advice is to stop worrying about whether or not your plan is optimal. For most people, it doesn't really matter IMO - they'd make more progress if they got better at make sessions incrementally harder and did them consistently.