My Bullseye sub was American Select. When I started reloading BE was non existent. It's cleaner and loads are comparable. I have about 10 lbs of that. That's my pistol/revolver powder.
Rile is Win 748. That's what was available when I stocked up. I have 8 lbs of that.
I use 2400 for a few cartridges so 5 lbs of that.
Powder is going to be hard to source this summer. Buy what you normally use. If it isn't available buy a lot of something else that works.