Traditional "marketing" is now only a sliver of the CMO job.The top marketers of 2026 are part brand-builder, part data scientist, part cultural weathervane, and part AI wrangler."It used to be one, two, or three-dimensional," Comcast's Jon Gieselman said of marketing. "Now, it feels like it's 20 or 25, and you increasingly have to become more of a technologist these days to really drive the business in a way that's going to keep up with everyone else."Business Insider's annual list of the most innovative CMOs spotlights marketers, including Gieselman, who are pushing their brands into new territory and delivering measurable...