Here's what I know so far:
1) Sorian got hit with something on Night 2. It took his vote and we can see the effect of it. He's claiming it's Joker toxin.
2) Sorian is claiming he was roleblocked. If that is true, it was obviously not the town roleblocker, so it had to be non-town.
3) There's a non-town between Coppa and Ty4on.4
4) Scum was willing to dwindle that list down by eliminating AB. Could mean two things - they're ready to bus someone (which isn't a huge loss because they've not lost anyone so far) or there is actually no scum in that group.
5) Coppa visited Kark on N2, but he had no visible effect on Kark. Likely means that he has an information role, which would probabilistically make it a scum role.
We don't know if Trigger is telling the truth yet. I find it really weird that he held that back until the very end. Even if Coppa is scum, Trigger could have done that to distance himself from Coppa.
I do think scum has one or more information roles though and that it helped them find TL21xx. Coppa being scum and figuring out something with Kark can also explain why they hit ordinary town last night. Kark is a weird target to investigate, but maybe Coppa is a mafia watcher.