Endura shell style waterproof
Altura 3/4 waterproof shorts over 3/4 tights
Winter boots
A buff to stop the drips down the neck
Northwave gaiters (unless your winter boots already have stretchy ankles)
Windproof gloves (never found a pair of waterproof ones that last and are warm enough in torrential rain)
With this setup I’m completely dry and can finish a muddy ride, wash the bike, and then turn the hose on myself from the neck down to get all the mud off, without getting wet (apart from hands and exposed shins…I find a bit of skin is vital for temperature regulation so avoid full tights unless its freezing)
(and it will keep me dry all day, not just an hour)