Heya! If you pull up the track list in either the arrange window, or the console, at the bottom of that track list is a Filter search box. Type in what you want, and you're golden!
In the above example, I surround all my final group busses (drums, bass, guitars, etc) with the pound/hashtag sign #. So if I search for # in the filter, it hides everything else and just pulls my group busses up. If I clear the filter, it goes back to showing whatever I had prior, including honoring any tracks I had hidden before I typed in the filter.
To add a little more usability, if like me you have some consistent naming schemes, you can set up these filters on macros. I saw a guy on YouTube who started all the names of his drum tracks with d:. d:kick, d:snare, d:tom 1, etc. And all his guitars start with g:, vocals start with v:, etc. He set up a few macros and keyboard shortcuts to search the filter for d: to quickly show all his drums, v: for all his vocals, and simple : to show all tracks (sadly, there isn't a macro option that I can find to clear the filter, and simply using a blank in the filter macro doesn't clear it).
Hope this helps!