I know you’re looking for non-intel solutions but here is my setup-

Mobo r8169 is the management interface for proxmox.

X710 4 port: 3 ports passed as a a single vmbr for LAN:
- 1 fiber optic to detached building
- 1 DAC to core switch
- 1 DAC to workstation
1 port passed as vmbr for WAN

That config was sorta inherited by trying to pass other non-intel nics as pcie and failing. I needed an sfp for the fiber run so I got that 4 port Intel card. It works well enough that I haven’t bothered to reconfigure it to pass the Intel as pcie.

My brother in networking- you can store your files in the L1 cache of your CPU and nextcloud is still going to be slow