https://www.levels.fyi/2020/ is a decent resource. The numbers are fairly accurate, IME. You can also lurk around Blind if you want to get a sense of salaries in tech (warning though: Blind is completely obsessed with salaries, to the point where its unhealthy).

You'll actually notice that none of the FAANG are on the top 10 of that list. FAANGs definitely pay well, but these days "FAANG" is outdated, IMO. I've seen it "FAANGMULA" sometimes (FAANG + Microsoft, Uber, Lyft, Airbnb) but even that still leaves out other high payers like Stripe, Box, Bytedance, etc.