As the Vikings ramp up their search for their next general manager, new names of external candidates they're looking to interview are trickling in via the league's top insiders. We learned on Wednesday that the Vikings have requested an interview with Bills assistant GM Terrance Gray , who previously spent over a decade with Minnesota as a scout. On Thursday, five more names have emerged via reports from ESPN's Adam Schefter and NFL Network's Tom Pelissero. Let's take a quick look at each of the five, all of whom are currently an assistant general manager for the team listed by their name (and all of whom come from traditional scouting backgrounds). Remember, interim Vikings GM Rob Brzezinski is also in consideration for the job, and other candidates may continue to emerge in the coming days. Dave Ziegler, Titans Ziegler is a fairly big name in the NFL executive world because he's already been a general manager in the league.…