Bosches more cancel phases rather then add them.
The DW begins the prewash, and if after 10 or so minutes the soil level isn't to high, it just adds the detergent, otherwise it drains and starts the next prewash repeating the sensing a few minutes later.
During the rinses, it tracks cloudiness, if a certain value of obstruction of the optical sensing beam somewhere in the water path is reached within a certain time, it immediatly drains and starts the next rinse.
Otherwise, at the end of that time period, it drains.
A fill is about 3-4l.
The lowest usage cycle is the is Normal at 8.8l. I suppose that would be wash-rinse-final rinse with lower pump rpm.
Next up would be at prewash-wash-rinse-final rinse.
Acording to usage from the manuals, I would guess that is Autos minimum layout.
Heavy should be prewash-prewash-wash-rinse-final rinse at about 19l, the additional pre-wash being prefered over another default post wash rinse to get temperatures for the wash up quickly.
Next it would probably add another post wash rinse, and that would be Normals, Heavys and Autos maximum layout.
Ecos max layout appears to be 5-fill cycle with probably one prewash only and more post wash rinses to reduce machine heating activity for drying.
For the US machines an additional prewash might be triggered by too low incomming water temperature as well.
Keep in mind that after the wash there should be a quick multi-stage filter flush using about 1l in every cycle.
Though they might kick that if sensed soil level is low enough; you never know today.
Here, the max I can think of off the top of my head is prewash-wash-rinse-rinse-final rinse on the theoretical max Auto cycle with up to 18l or so of usage.
Auto can go as low as 7l, but AFAIK that basicly only triggers with close to no load. Not sure if that is wash-final rinse or wash-rinse-final rinse with lower Eco like fills.
Our machines can now do partial water exchanges after a prewash.
Combined with lower spray pressures, that drove our Eco cycle down to 9,5l of water while still technicly doing prewash-wash-rinse-final rinse. That first prewash-wash uses about 3-4l, 1l is reserved for filter flushing, the 2 rinses are compketly dofferent baths AFAIK bith both using just verry little water.
We did have DW that re-used the final rinse water of a previous cycle for the next pre-wash.
That dropped usage to 6l on the BSH units. That is about 1.6gal for a full load.
These machines never were A+++ rated though I think as they had to use the hotter final rinse pattern of the A++ cycle design to ensure nothing could grow in that watet.
They have been eliminated from the lineup by now though as they added a lot of complexity for verry little everyday gain and people kimd of didn't like the idea.