These only work on iOS 14 and MacOS Big Sur:

All Providers (Listed below) in one file (DoH and DOT) Except Adguard:

All

All in One Configs (DoH and DOT):

Cloudflare

Quad9

Google

OpenDNS

Adguard:
Adguard DNS

Adguard DNS Family

Adguard Unfiltered

Split Configs (DoH and DOT):

Cloudflare DOH

Quad9 DOH

Cloudflare DoTLS

Quad9 DoTLS