I've spent considerable time studying both approaches [SICP-like, nand2tetris like, and I'd include a third OS-centric approach as in MIT's Xv6 courses] (SICP a

I've spent considerable time studying both approaches [SICP-like, nand2tetris like, and I'd include a third OS-centric approach as in MIT's Xv6 courses] (SICP and SICP-adjacent I would also include programmes based on Forth and self-bootstrapping Smalltalk), one is the bottom-up approach from the CompSci point of view and the other one from the ElEng point of view. The general bottom-up approach is dead or moribund, as it's the concept that an educated professional should know more or less all the relevant aspects of his or her discipline to a decent standard.