Valve Amplifiers, by Morgan Jones is pretty much the gold standard. I have the 3rd edition and there is a wealth of info in its 616 pages. Yes he leans to P-P and has his favored valves but there is a worked example of a SET amp.
It is very much a Text book, starting with basic theory, to components, to building blocks and more theory. The example amps are not so much, build this but a complete walk thru of the design process.
It is well written but not an easy read and there is plenty of math. It is not the first book I would point a beginner to but it is very complete and I highly recommend it.
The second book, Building Valve Amplifiers, is just that, tools and technique. Plenty of good info but not indispensable.
I am not familiar with John Hood...John