I shoot 204, 223, 22-250.
I think the 204 is just inherently accurate, I have tried many different powders, and they all shot well, Currently I load W748 and 32g Vmax, makes em Pop.
223 again different guns but CFE, 8208, tac and lately Imr4198 ( found a bunch of Sierra 40g Blitzkings at .15 each and the combo Imr4198 and the 40 SBK is deadly, 3640ish fps )
22-250 for Pdoggin, 40vmax and N135 ( have not yet worked a load for the 40g SBK )
the powders you listed, I would rate as
1-8208 ( can be hard to find at times ) but I have had great accuracy with it in all I have tested
2. CFE223- I got some ragged 1 holers to back that up and is usually easy to find
3. Varget- hard to beat, very well rounded powder works in many calibers
4-H335 good stuff but watch temps as said previously
No experience yet with xterminator but word is, its solid stuff.