In many engines, HP cylinder have piston valve and slide valves in the IP & LP cylinders, hence valve settings are obviously different.
And some engines don't have a receiver in its own, but simply large piping and steam chest !
The combined volume of the steam pipes and steam chests all add to the overall receiver volume. A receiver is simply a connecting enclosed chamber.
Just because the valve concept is different, slide valve, piston valve, Corliss valve, ect...doesn't mean the timing is necessarily different. What controls the cut off between the HP and the next cylinder is the cylinder ratio, and the cut off of the HP cylinder.
Dave