William Earl “Saturday Night Live” alums Maya Rudolph and Kristen Wiig joined Kate McKinnon as the latter returned to “SNL” for the first time as host, 18 months since she bowed out of the cast after a 10-year tenure. After the cold open, which spoofed Hollywood award shows, McKinnon hit the famous Studio 8H stage and did a short monologue. She acknowledged the awkwardness for her of coming back to her “old job” but in a different role.