what's your process for building a keyword list?

my order, roughly: 1. list what the business actually sells or does, in customer words not industry words 2. dump search console queries if the site has history 3. run the main terms through keyword planner + google autocomplete for variations 4. look at 2-3 competitors' top pages 5. group into topics, one page per group, mark which pages already exist step 5 is what turns a list into something usable. a list of 500 keywords with no grouping is just noise.