I'm all over the board (except I clearly lean towards one particular band). Greta Von Fleet, Dave Matthews Band (25+), Three Dog Night, CSNY, O.A.R., String Cheese Incident, Phish, KISS, Snoop Dogg, Bruce in the USA, Umphrey's McGee, various cover bands, Kid Cudi, Smash Mouth, Eddie Money, Robert Randolph and The Family Band, Buddy Guy. I also saw a Jimi Hendrix tribute concert where multiple artists came out and played a song that had an influence on them. Zakk Wylde was easily the best of the bunch.
I missed out on Van Halen and the 80s hair band scene so getting to experience some solid cover bands over the last few years has been pretty cool.
What's upsetting is my list of bands I never saw but now won't because someone passed away; Bruce Springsteen and The E Street Band, Beastie Boys (probably my favorite band/group ever), and GWAR.