SPOILER ALERT: This piece contains spoilers for the Season 1 finale of “Yellowjackets,” “Sic Transit Gloria Mundi,” which premiered Sunday, January 16 on Showtime. Internally at “Yellowjackets,” the nickname for the show’s trifecta of showrunners is JAB — which stands for Jonathan Lisco, Ashley Lyle and Bart Nickerson. Lyle and Nickerson created the genre-defying Showtime […]