I am looking for some immigration advice via the EEA-settlement route / family residence permits. I am fairly new to this topic and my research so far has only been a lot of extensive google searches so please bear with me

I am a EU citizen living outside EU - I am going to move to UK for work in the next few months and would like to have my wife and her parents gradually join me. They are not from the EU. As per my understanding, it is better for my wife to have a EEA family permit issued vs the spouse visa in the UK. Is that correct ?
Furthermore, what is the likelihood of this being issued for my parents-in-law (they are 60+) if we go the EEA family permit route ? I understand they would be initially issued a 6 month permit, following which they can apply for the EU settlement scheme. Is going down this path similar to the blackhole that ADR visas are ?
Thanks!