>>104114471The Winter Guard have just been sort of there the past few years, mostly showing up as cameos and guest-stars. The main thing to bring up is that Vanguard, Darkstar's brother, is the current Red Guardian, and that the Crimson Dynamo is Dmitri Bukharin.
As for the Squadron Supreme, they had a book written by Robinson a few years back with the Hyperion from Hickman's Avengers, Supreme Power/MAX Nighthawk, the original Power Princess, Doctor Spectrum from Hickman's New Avengers, and some other people. The book was cancelled and the team disbanded. The only one who showed up afterwards was Nighthawk, who was allegedly killed by Hydra in Secret Empire.