For that specific application, the pricing of the Xeon Bronze and Silver models is pretty good - the Platinums, though, are far less attractive. Outside of that market and CLX struggles to offer much for the price.
The K version is on the ‘Best of...’, not the KS. For me, the latter deserves its place on this list because of the price difference between the two, for something that can be achieved with a bit tweaking, overclocking, and decent cooling. Yes, good coolers aren’t cheap but the one that comes with the retail versions of either CPU isn’t amazing anyway. The KF deserves its place because there is absolutely no reason to buy one over a K, or over any CPU for that matter...
I have a bit of a soft spot for the Radeon VII. Yes, it's a thermonuclear monstrosity, but who doesn't want 16 GiB of HBM2 in their life?
Newegg has one on sale for $500 at the moment, which is the same as a 2070 Super. They perform similar to each other but with the Radeon, you can drop '1 TB/s of bandwidth' into your daily conversations all the time. I mean, who needs to trace some rays, when you've got that kind of memory bandwidth?!