This is my opinion:

Hearing about the lastest lockdowns on Intel CPUs and motherboards, Then i would go for a B550 motherboard and a 3700X.

Personally, i run 5 accounts on 32GB 3200MHz Ram, Ryzen 3700X, a MSI MEG ACE X570 and a GTX1080 GFX. I have zero issues multiboxing.

If you haven't heard, Intel will begin limiting memory speeds aswell as cpu speed on lower end chipsets.