It's a pretty large reading list though, would be nice to have a list of the top three to five.

Most of these are essays, which together would make up perhaps one of two books. Together with the 4 books listed in the books section of that page, I'd say you have a decent short list.

Good point:

IT depends on what you do. I made it for salespeople initially, based on books I'd become familiar with.

That is solid.