Intel Gen10 CPUs, would mean 400 series mainboards [B460, …]
AMD 400 series mainboards, may be bit of crapchute to Ryzen options*
[*unless its declared, what BIOS is applied - telling what oldest supported CPU series]
This would be your floor, regarding natively supported platforms
… I could mention X299, but them Gen10x CPUs, are still notably pricey
[Unless you can see making use, of the extra PCIe available]