Lando-T, Thundurus with Prankster, Gale Wings Talonflame and Mega-Kang.
Pretty much the staple of VGC/Doubles right now and my word are they annoying. The most annoying of them in my opinion is The Prankster Thundurus due to priority Thunder Waves and then Talonflame.
I do have counters to all of them, but it's still annoying seeing them as frequently as you do, although for good reason...they're good.
Although I've never had issues to Lando-T to be fair or Mega-Kang and I tend to find myself running with Mega-Lopunny.