Luckily uBlock Origin now supports blocking on CNAME records and PiHole is rolling support out for it as well. I maintain a blocklist that I use with the PiHole: https://www.github.developerdan.com/hosts/
Is there any other way to wildcard block full domains in Pi-Hole?
Look for example in your list: d41.co, admaster.com.cn, mixmarket.biz chances are extremely slim that all (current) hostnames of those type of domains are currently being blocked.
You are not able to block something like 'ads.%.adhost.com', but only (prepending wildcard) '%.ads.adhost.com', which in practice will cover almost all scenarios where random subdomains are used by adhosts.
No, it's not. Is there something wrong with their implementation?