If it were me doing this, either Zerotier or Tailscale. They aren't strictly VPN's in a traditional sense, but they largely achieve the same ends, and Zerotier'

If it were me doing this, either Zerotier or Tailscale. They aren't strictly VPN's in a traditional sense, but they largely achieve the same ends, and Zerotier's been much more flexible and performant than anything else I've ever tried.