Old news for most pro webmasters, but OMG User Agent strings. Care to play Guess the Browser?
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 Edge/17.17134
https://webaim.org/blog/user-agent-string-history/