Re: Windows Server
DNS over TLS is no different to DNS over HTTPS, apart from it uses the DNS protocol, as opposed to HTTPS. Both are end-to-end encrypted and can't be spied upon. But it is a more standard protocol, so probably the ISPs are keener on using that themselves than DOH.
If you use a DNS provider other than your ISP and use TLS, they can't see the traffic. DoH uses the same TLS encryption as well, but over HTTPS TCP instead of DNS UDP.