The Big Leap” and Paul Feig’s “Welcome to Flatch.”The trailers were unveiled at the network’s annual upfront presentation to advertisers on Monday, alongside information about returning favorites “9-1-1,” “The Masked Singer” and “The Resident.”The new shows teased Monday also include the long-gestating mob drama “The Cleaning Lady” and the ensemble comedy “Pivoting,” starring Eliza Coupe, Maggie Q and Ginnifer Goodwin.