For your purposes, I would archive data onto Optical Media. Like archive disks (M-discs), or maybe you can get away with Blu-ray disks for a bit lower cost. That’s currently the only medium that will survive pretty much anything other than melting (solar radiation can’t ruin etched data)

You can have some SSD’s, but you may lose the data on them overtime, they do “bit rot” after a few years. So you may just want to keep them as a “restore medium” wherein you take the data off your optical disks and load it up onto the SSD’s for a good (fast) experience.

Or maybe do a combination of the two, that way if the data makes it on the SSD’s, then great! But you have some sort of more stable medium to fall back on.

Downside of course, is optical disks are starting to feel pretty small now :(