I have a thread in my sig about getting the right power efficiency from the 5800x, you get no gains past 120W - 95W is the sweet spot, and all but the worst boards can handle that fine
All the boards have garbage software/RGB control, so get the one with the hardware features you want (M.2 slots, wifi, ethernet, whatever)
Oh and make sure it has BIOS flashback, only a few truly shit boards dont have that
You will not get RAM above 3800 stable. Dont even bother falling for that marketing.
After looking at those two and ignoring the marketing, they're basically the same
B550 doesnt leave much room for innovation