Do negative ratings by Jr. Members and below even matter? I have two negative ratings by spam accounts but it doesnt seem to have a negative effect at all.
No. Only ratings from DT1 and DT2 members are visible by default, and thus also affect your rating. I've got a lot of fake untrusted feedback on me, nothing to worry about.
Okay, that makes sense. And how do I see who is on the DT1 and DT2 lists? My trust bar is green, so I am assuming I am on one of those, but how can I check?