Migrating to new PC -- which PS folders to backup?

I did this last year. Checking the folder I'd copied to my desktop, I see I saved Patterns, Gradients, Custom Shapes, and Workspaces. It went smoothly, although I have occasionally had to boot up my barely running old computer to copy some .PSPs for Curves and some other things I'd missed. I can still do this after deactivating Photoshop on my old computer, and disconnecting it from the Internet. Photoshop still runs, as do some older versions I stil have. I do no production with these, but sometimes will check how things used to work.