I use an old Lenovo AIO PC to dual boot Linux Mint and Windows 10. It works well from a hardware and firmware perspective, but I've deliberately avoided Windows 11 as it is crapware.

I have done triple booting of MacOS, Linux and Windows on an old Mac Mini, and it was a nightmare to get them working, but worked well once set up.

I think well known brands and models of PCs are better for such alternative setups, rather than obscure PCs.