Gateron Jupiter Brown

It sits firmly in the light-to-medium tactile camp. The bump is gentle and rounded rather than sharp, with a 55g actuation that keeps typing easy on the fingers. If you want an aggressive, snappy tactile event, look at a dedicated bumpy switch instead.

Yes. It ships factory-lubed, so it feels smooth out of the bag and doesn't strictly need hand-tuning. Lube and films are optional polish, not a requirement.

A polycarbonate top housing over a nylon bottom housing with a POM stem, on a single-stage stainless steel spring. That mix gives a slightly deeper, less clacky sound than an all-nylon switch.