8 lbs is a lot of powder,
For the cartridges the OP listed, 8lbs of powder is about 1,000rnds. A hundred or so more in the smaller cases, and a hundred or so less for the bigger ones.
Might I suggest that, before buying in bulk, you buy a number of 1lb cans of different powders and test them in all your rifles. Then chose the two that work best in the most rifles and buy those in bulk,
Any combination is possible and most of the time you will get decent performance in all of them from about everything, but some powder are going to be better in some rifles than others, and some are going to be worse.
it is, for example not impossible you could get a powder that shoots great in one rifle, only does "meh" average in two others and shoots like crap in the remaining 3. Do you really want to buy 8lbs of that??? OR 8lbs of anything before you know how well it will perform, overall??
All the cases listed are close to or are "overbore" meaning a large powder capacity compared to bore size, so you will get best velocity results with powders that are at the slower end of the burning range. Medium to slow should do well. Accuracy is going to depend on your individual rifles and loads.