If I can comment on Adam's observation. In the UK, the norm is to prespray with a dedicated prespray detergent for all types of rinse/extraction systems. These detergents are typically not free rinsing so need to be rinsed with a compatible detergent or acidic rinse to not only remove the soils, but also the pre-spray residues.
Most porty users have pump up sparayers, but many also have inline sprayers. We have models suitable for use between 100 and 250psi so mant porty users have them as well as the T/Mers.
There are a few products such as Alltec's Ultimate Master which are used in tank and can be used as a pre-spray from the wand, brushed in then rinsed with the same solution. They start off at about pH10 but are self neutralising.
There are also many cleaners who use any of the various detergent free products. These are typically free rinsing with plain water.
As for national differences, our US colleagues work with upwards of 22" wands 'cos everything stateside is bigger. The Canadians work in fur lined boots 'cos it's so damn cold there. The Aussies and the Kiwis have carpet on the ceiling as everything is upside down. Carpets must dry quick though 'cos gravity helps the wicking process. Finally, us Brits work in Union Jack shorts and, as every carpet in this country is a 100% wool axminster or wilton, work with the most delicate touch of a precision engineer, dry every individual tuft with with a q-tip dipped in isopropyl alcohol and are extremely grateful for the tip we receive at the end of the job (eg, todays tip was "don't eat yellow snow")
Safe and happy cleaning
Ken