The ones that I noticed were almost all Pioneer DJ controllers. SX and RX line was pretty much the controllers of choice in the bars and clubs on my travels.
I find that if the club or bar owner was once a DJ then you get good equipment. Any of these clubs that don’t install equipment just hire it in for big names etc. The resident’s almost always use Serato DJ or Virtual DJ so a £5k Pioneer DJ setup is wasted on them to just use as controllers.
The LC6000 line would be perfect here.