You have one on me there because I have never read any of his westerns (or any western full-stop).
Your orange rankings are the ones I wouldn't agree with. Get Shorty is probably his most effortless book, feels like the book he wanted to write about his adventures in Hollywood, and how funny the whole experience was. He nails the whole scene and it's very satirical for Leonard. The other two are from that early period of crime writing, a lot leaner and tougher, but if you don't like these then books like City Primeval, Unknown Man No.89(?), Swag and The Hunted probably wouldn't go down so well either.
I think you missed Mr Majestyk when you watched the Bronson classic (
). A short book that is one of my favourites, just the quintessential tough guy perfect for Bronson.
It's my enthusiasm that's driving me to push those books I mentioned. I obviously generally love Leonard but Glitz in particular puts his other work in perspective, frames it. There's generally a template to his stories- characters, dialogue, interaction and oh yes a crime story but Glitz does all of these better; better villain, better plot, wonderful supporting characters...I know gush gush.