After spending way too much time reading ZFC, Hambini, Silca et al, I think I can write the definitive treatise based on real world experience.

What chain should I use? Doesn't matter. There are lots of more than adequate chains. I like the SRAM shiny silver and KMC "oil slick" chains because they look really cool.

What lube should I use? Doesn't matter. Some are cleaner than others. My buddy had one that smelled like coconut suntan lotion. If you want a new hobby or part time job, try waxing. But don't expect that to gift you the local KOM.

How do I know if my new chain is counterfeit? If you bought it on AliExpress or Ebay, it is. Don't be a putz, buy stuff at a real bike store.