e.g. provide adblocking for all clients except 192.168.1.22/32, 192.168.1.33/32, 192.168.60.221/32
You can do that with views. (I fon't think it's supported via the GUI, you'd be better off using BIND.)
adblocking for all clients except 192.168.1.22/32, 192.168.1.33/32, 192.168.60.221/32
There is a third-party plugin that exposes Unbound custom configuration (os-unboundcustom-maxit). If you want to use Unbound and all you want is unfiltered access for a bunch of IPs, I'd suggest running another DNS server instance (BIND, dnsmasq) on loopback and forwarding the DNS queries from those clients there. Otherwise, IIRC the AdGuardHome plugin handles this type of functionality natively. (Never used it myself.)
I am quite surprised no one has written a plugin for the adblocking yet - Unbound is so widely used.