The first few times I interacted with this filter I was thrown by the numbers next to the presets. e.g. 'Last 15 minutes - 1' 'Last 30 minutes - 3'. I read these numbers as counts of how many activities we have in those filters.
I wonder if there's a better way to present these numbers. Perhaps adding a table column title that reads 'keyboard shortcut'. Or could we use a different keyboard shortcut for those two that aren't numbers based.
It could be as simple as adding a border around these key shortcuts - like Git do:
