The Sasquatch is an option package (including 35" tires, locking diffs, etc.) that can be added to any trim level of the "big" Bronco which has not started production yet. That model is being built on the T6 Ranger platform, not the F-150. I suppose it might be less confusing to call it a "bigger" Bronco since a lot of us old timers automatically think full-size when you say "Big Bronco". The new bigger Bronco was actually designed with similar proportions and styling cues to the first gen Bronco which was produced from 1966 to 1977.
The Bronco Sport that has been on sale for a couple of months now is basically just a re-bodied Escape although they did upgrade the suspension to make it more off-road worthy. Totally different thing from the big Bronco.
Latest word is that the hi-po version of the big Bronco will be called the Warthog, not Raptor. It seems as though Ford is reserving the Raptor name for hi-po trucks, not SUVs.
I'm actually more interested in the Bronco pickup which is rumored to be coming out in another couple of years, probably after the next gen Ranger. I might be tired of my '18 F-150 by then so the timing would be about right for me. That model will probably use the 4-door Bronco sheet metal on a full-length Ranger frame with a longer cab but shorter bed than those of the Ranger. Kinda like the original Sport Trac only more off-road oriented. Think Jeep Gladiator, only better looking.