The shoulders are also called delts or deltoids. The delt triad (side laternal raise, front raise, rear delt) works the different parts of the deltoid muscle with the dumbells, see this video. I’ve been doing the front and side raises but the rear delts are new.
I used to do circuits of pull-ups, lateral raises, front raises, shoulder presses and lat pull downs at a previous gym. This was a good workout but I stopped due to thinking that the dumbell work meant that I was tired for the pull-ups. If I separate the shoulder stuff and have one session just for them then I can do the three types of raises with some overhead dumbell presses, like in this article. There is also the shoulder press machine.