The question is for more specific management. it seems that not only you need to allow to “select” which ones to use but also you need to ask first and then deploy. For example this topic that is also linked in the first post:
The main worry comes from the fact that third-party “cookie managers” can not only “fail” to do the trick for Discourse but also hinger it in some fashion. Hence my question. The Amazon fine stands as proof that this ain’t something to brush off lightly.