Discord is definitely used more often for communities. Some community focused game companies come to mind: Amplitude, Coffee Stain Studios, most gaming oriented

Discord is definitely used more often for communities. Some community focused game companies come to mind: Amplitude, Coffee Stain Studios, most gaming oriented youtubers have discords. I think the relevant feature differences is that Discord comes with free voice chat and free complex permission and group management features, as well as a much simpler on-boarding procedure (slack has you fiddling with accounts for each individual group).