Great question to start this thread, David!!!
I too am assembling a small (by knife knuts standards) collection of handmade fixed blades and semi-production folders for my Grandsons.
I am also a .22LR target shooter with some very nice rifles, none of which get shot/cleaned often enough to meet my compulsive standards for foolproof storage. I'll skip all the reading, testing and re-reading I have done into a wide variety of lubricants, anti-corrosive/anti-rust agents and preservatives for steels and woods. Here is where I finally ended up.
All blades and steel parts (stainless or not) get a thorough cleaning with gun-type "cleaner/degreaser," an immediate wipedown with alcohol and an immediate (thorough but thin) coating of Mil Comm grease. (I used to use Mil Comm oil for that last coat, but found that it tended to flow with gravity when stored - the grease stays put.) The wooden and manmade portions of handles get a scrubbing of water with a bit of dish liquid, then two thorough coats of Renaissance wax. Finally, I'm still deciding upon the storage containers. Currently, all are stored bare - used to wrap loosely in microfiber cloths but found that the cloth absorbed the grease - in plastic tubes with caps at each end, but some airholes are present. I'll probably switch to Zcorr bags. All stored knives are stored in-house and examined twice per year with a 45x lighted magnifier.
By the way, my close second choice for final metal coatings is Eezox, a product which I use extensively with my firearms. It has the advantage of drying to a non-oily finish on metals. However, that advantage means that I can't detect its presence or absence across the entire surface. As for Renaissance wax, there is a video of testing on steel which leaves me wanting.
I cannot and will not claim that this technique works. Long term results will tell. By carefully watching and reading all of the corrosion/rusting/degradation tests (which are readily available on the net/web), I feel that I have minimized the atmospheric risks as far as is currently possible.