I've never seen "creative director" used in the infobox for TV shows, because "creative director" is not a title actually held by someone, at least in fictional series, to the best of my knowledge. It is production designer, and that's what they're credited as. It also looks quite odd in the infobox, where you have someone who is the production designer listed so high in the infobox, just below the creator and above more notable roles such as the cast and executive producers. This is a good topic of discussion for Template:Infobox television, that "creative_director" should be changed to "production_designer" in the infobox and then moved into the "Production" portion of the infobox, along with other similar crew roles.