YouTube once funded creator-driven original content — but the streaming giant wound that down several years ago and instead embarked on a strategy to promote shows YouTubers are already producing themselves. That makes YouTube an outlier during TV upfronts week: It’s making an ad pitch to Madison Avenue on content it doesn’t directly control or finance. At its YouTube Brandcast in New York Wednesday, the Google-owned platform is doubling down on the strategy. At the heart of its presentation is a slate of new and returning creator shows coming exclusively to YouTube, including from “The Daily Show” alum Trevor Noah, Alex Cooper (of “Call Her Daddy” fame), and popular YouTuber creators Kareem Rahma, Jesser (Jesse Riedel) and Dude Perfect. ( See below for details on the shows. ) And, in a new development, YouTube will now let marketers buy sponsorships and ad inventory for individual creator shows — just like TV.…