I love the list, but the design process I taught in school was way different — it was a loop of two steps, started anywhere:

1. Do something. (Many of the five above seem nice! But there’s lots of methods that fit different tasks)

2. Ask some users please for the love of god! Show it to somebody! Get your mom’s feedback! Anybody!!!

Etc. It was drilled into me pretty hard at GaTech by their HCI prof, but perhaps he spent so much time reiterating it because it’s heterodox.

It doesn’t help that “design” covers everything from splash pages that sell SaaS to doors and blankets and stuff. I’m a little dubious of any single unified framework other than the aforementioned Frantic Dyad that could hope to cover all that space.