As often with slang I guess, but at least half of these were in common usage over a decade ago, so not exclusive to Gen Z. Triply so for Big yikes, bop, dank, drip, eboy, goat, high-key, hits different, L, rent-free, salty, sis, smol, TFW, W, they jump out to me as predating my childhood, never mind Gen Z's.

Also finesse is just a normal word and has been usable in that sense for over five centuries.