+1 for B550-A Pro, the prices dropped very recently and now they're sub-£100 new. All black, one of the sleekest and nicest looking motherboards I've ever seen and it omits ANY form of RGB or silly gamer tat.
Spending a bit more you should get B550 Tomahawk or Gigabyte equivalent. X570 is a waste of your money unless you are aware of and will use the extra features.