Testers is the only one I would recognize that should be added and even then— I know of absolutely no one on the forum who is just a tester and not also a scripter, programmer, builder etc…
YouTubers do not belong here, I don’t know of any YouTubers making videos on the devforum site as I mean… it’s not really entertaining and has pretty much no content to use.
Furthermore… forum writing is not a skill. I don’t mean this to ridicule or in an insulting way but a child could hop on and tell you what to improve on.