How would I wire this UV-C lamp?
When you see multiple wiring diagrams in a ballast's instructions, it means there will be a table of supported lamps, which will indicate which diagram applies to that particular lamp.

This lamp is NOT on the ballast's list of supported lamps

Well then, that’s that.
You either need to use a lamp that is on the ballast’s list of supported lamps, or use a ballast which lists your lamp. I suspect you’ll want to do the latter since your goal is a UV light.
We’ve been getting a lot of these questions since early March, one guess why... and the fact is that while the UV lights share the same sockets as fluorescent illumination lights, they have very different electrical characteristics and require diffferent ballasts.  (This isn’t anything new; T8 and T12 lights share the same base, and require different ballasts).
You can’t just hork together mismatched sets, or at least, you’ll get failing or compromised performance if you do.  And unless you’re an elf or halfling, you probably can’t see UV-C, so how would you even know it was working?  Using reputable matched parts and observing on-spec current draw is your best bet.
Speaking of “reputable”, you’ve done an amazing job dodging the sea of dangerous, cheap Cheese junk that Amazon is awash with thanks to the dubious Amazon “Marketplace”.  However, they nailed you on that line cord.  For a line cord, simply buy any UL Listed extension or line cord at any local shop or from your cord drawer (my favorite is that surplus of PC cords we all have)... and lop the socket end off.
Given that this is a homebrew rig, you should put serious thought to grounding; your future ballast’s spec may even require it.