That's a lot of tools Guitarfrenzy. And, I'm not sure I would go so far as to say that there are required tools.
I would say that there are tools that you need in at least of one of each type:
1) Tools that go up-and-down.
2) Tools that spin around.
From what I've seen here on this forum, people have gotten good results with really simple hand tools. A hand saw (goes up-and-down) used to rough out a neck, and a power drill (spins around) to hog out wood for a pickup cavity. Add a sharp chisel and a file or two and you can do just about anything with that. Not that I would want to.
The more tools you have, the easier it gets. I have a few tools that go up-and-down: scroll saw, hand saw, hack saw, coping saw, jig saw, sabre saw. And, I have a few tools that spin around: drill press, hand drill, electric drill, dremmel, my head, etc...
With a little work, you can convert certain tools. My drill press becomes a drum sander with a sanding bit. Same thing for the dremmel, it has polishing bits and sanding bits, and router bits. It can become nearly anything (that spins around)