The commercial washers I've used have all more or less had the same sequence, with a few tweaks here and there.
Ipso washers (the most popular washers found in launderettes here - I read somewhere that they have a market share of over 70% of the British launderettes) follow this sequence: Pre-wash/30 sec spin/Mainwash/Drain/Rinse 1/30 sec spin/Rinse 2/30 sec spin/Rinse 3/3 min spin/1 min fluffdown.
70s Duplex washers used to live in a launderette near me until they were replaced with Ipso WE132's. They didn't reverse the drum (it kept turning clockwise), and did wash/long spin/spray-rinse (it just tumbled the drum with the fill valves and drains open for about 2 or 3 minutes)/spin/deep rinse/final spin. These Duplex washers were from about the 70s; a shame that they replaced them but then from a business point of view they were I guess uneconically viable.
The same launderette also has 2 80s Primuse washers, and 4 Avocado Green Schulthess washers. The sequence on Primus washers is similar to the Ipso (prewash/30 sec spin/wash/30 sec spin/rinse/30 sec spin/rinse/30 sec spin/rinse/3 min spin/fluffing), but the cycle on the Sculthess washers are much more interesting.
The Sculthess washers do prewash/spin/wash/drain/rinse/spin/rinse/spin/rinse/bluing/spin. The unique thing about these machines is the bluing phase at the end of the final rinse. Instead of draining the water through tumbling, it will start to spin the tub when it's still full of water (and the water level comes 3/4 up the window!), it takes about a minute for all the water to eventually drain away from the spinning tub, and once the water is all drained away it will boost the spin from 500rpm approx to about 750rpm. Quite nifty for a bolt-down 70s commercial machine! It does very well at washing and rinsing too.
If I was not too embarassed too I would take pictures
BTW, my AEG does a kind of suds-flush drain too, but after each interim spin. It will turn the drain pump off, fill for 10 seconds, then drain again, then fill for the rinse. I think this is to clear the recirculation pump from any suds, but I'm not entirely sure.
Does anybody else love the "whoooIIIEEEEEEEEEEEEEEEEEEE" sound commercial washers make when they start to spin? Then the screech as the drum brakes from the spin... Can't beat it!!
Take care all
Jon