Three types of skills for the life of the mind.
Dig your concise definition of semiotics. Care to weigh in on the semiotics of torn jeans, tattoos, mom jeans, hoodies, or those increasingly irrelevant face masks?
Late to the comment party, but this is serious business and has taken a couple of days to cook up in my mind. First, I recognise your semiotic insight and notice I got to a similar place by a very different route. Bluntly as a recovering academic I had to get beyond what Wittgenstein called 'the cage of language'. I have used Buddhist meditation to get down to what I think of as the bare metal of experience. To drop that false 'knowingness' that education induces by over developing the ability to manipulate language to represent abstractions until embodied connection to reality is lost. On the other hand that very educated ability has helped me 'figure it all out' and I am of course using words to the best of my ability right now to describe my experience. I've found that the Taoist injunction that 'The way that can be spoken about, is not the constant way.' is a good reminder that the verbal is always secondary.
But for me the really astonishing aspect of your post is the last part about third order epistemics - PM, SA, MP! Again by an entirely different process - Theravada Buddhism - I have come to very similar conclusions and act on them every day. You already have me reading Epictetus and Marcus Aurelius. You mention that Eastern philosophy has an expected place in your ongoing work. I recommend the Dhammapada (Easwaran translation is good), and the Tao te Ching and the Lost writings of Wu Hsin. I think this kind of experiential convergence goes a long way to indicate that there actually is a capacity to apprehend the real that underpins human development. A foundation that is not in any way a simulation - Richard Rorty and Elon Musk notwithstanding.
On semiotics, I find it particularly interesting that there is no effective, universal notation for movement. Given the superabundance of steadily evolving and readily applicable technology, the importance and universality of movement and movement "systems" - and the likely demand for such a system of notation https://subrealism.blogspot.com/2020/12/a-contemporary-longitudinal-breakdown.html - and yet - there's nothing there but a hard semiotic vacuum.
As for meditation and prayer - is there such a thing absent somatics? Is meditation and prayer anything so much as applied awareness and systematic knowledge of the body as the all-encompassing collection of stresses, anxieties, and pains comprising the "self"?