Here are my guesses:
Tenant 1: Existing Granville entrance near Robson (next to the Pacific Centre entrance)
SE corner of Level 1 and large area on Level 2.
Maybe Level 1 and 2 extend across to access a common area elevator vestibule and freight elevator,
which would explain why that new escalator is at the back of the unit and oriented sideways.
Could be an Eataly, consistent with restaurants and entertainment off Granville.
Tenant 2: Entrance at Robson & Howe corner. Small/medium retail area on Level 1 and on Level 2.
Escalator up and stair down suggests low customer volume, so maybe a Uniqlo. Consistent with Robson being fashion-oriented.
Tenant 3: Biggest tenant with new entrances on the plaza and midway along Granville. Floorplate likely arcs through the ground floor encompassing the existing Nordstrom escalator atrium. So moderate area on Level 1, remainder section (not occupied by Tenants 1 and 2) on Level 2 (could be quite small if Toronto is a precedent) and all of Level 3. Probably Simons, but with horrible streetfront presence. Hopefully Level 1 isn't just glorified corridors.
Simons would have been better bidding for the Hudson's Bay space.
Tenant 4: As Jollyburger notes, probably just the NE corner of Level 1 with huge prominence on the plaza.