So, turns out that the "when up/down arrow pressed" headers also respond to the scroll wheel on your mouse! Experiment, have fun, and backpack! Scroll bar responds to mouse scroll wheel, up/down arrows, dragging the scrollbar, and dragging list touchscreen style; move mouse to upper left corner to view settings
Credit to Oranium for OranText https://scratch.mit.edu/projects/40890792/ my alternate account SR_alternate originally shared this, but it was still made by the same person (me) and I made some modifications on this account, like a cloud list for usernames! (my alternate still isn't a scratcher after 3+ weeks of activity, 3 projects shared, requirements met etc. etc... D:< so yeah idk what's up with that...)