Looking for a Motherboard with Specific PCIe Slot Configurations

I'm on the hunt for a motherboard that features at least two PCIe 4.0 x16 slots where I can bifurcate so both run at x8, and I also need a PCIe 2.0 x4 slot. I've encountered difficulties finding a board with a PCIe 2.0 x4; most only come with a x1. The most reasonably priced option I've spotted so far is the Asus Pro WS W680 ACE. I'd prefer to go with AMD for this build, but if there aren't any suitable options, I might switch to Intel. Ideally, I'd like a micro-ATX board, but that's not a strict requirement. Since this might affect M.2 usage, having two M.2 slots would be a bonus, but I can manage with just one.