Lugia, that's a really useful explanation and reference system.
As a noob who is just thinking about starting modular, my approach will be to start with a semi-modular and then add modules as I develop ideas about what I want to do. After the semi-modular and the case/power supply, I expect that my first purchase will be an Expert Sleepers Disting because it can be used for so many functions.
I have also noticed that there are a lot of really cool sequencers for Eurorack, but initially I think it will be more practical (economical) to use a variety of apps on an iPad to send MIDI to a MIDI-CV converter in the system.
My other advice to fellow Eurocurious is to try the free VCV Rack on a computer to learn about modular.