I'd like the description to list people who have the relevant access and thus the responsibility to handle the tickets

@Krenair compiling that list would be the first ticket i'd tag with this project :)

Who is able to find that information?

i checked. looks like the answer is:

searchteam+gwt@wikimedia.org for mediawiki.org

and swest@ wmoran@ abaso@ for wikipedia.org

(it's a separate list for each "property", and not easy to list for all at once)

^^ is good enough for me since we don't have such a list for all projects

However, I'm also hesitant to list those people's names/email in the description of the project. I think simply subscribing them here and asking that they 'watch' the future project should be sufficient.

Discovery has its own account for Google Webmaster Tools (or whatever it's called now). That the searchteam+gwt@wikimedia.org email address you found. That said, Discovery are not the owners of Google Webmaster Tools, we merely have access to it in case we need it.

Alright, so the ticket is rejected i guess.

P.S. The point of creating this was that there is no owner for these, so that they can be tagged with something, but if we need owners to create a project and Discovery doesn't want to own it then there isn't much to do here.