Does all reports goes through the instance’s admins? From what I understand, it’s all the reports from local users in all communities, remote and local?
Are they also provided to the mods of the community where the reports originated from?
Yes.
For communities hosted through another instance, are these reports also sent to the admins of that instance, what about the mods in that remote community?
Yes.
It gets really complex how reports get cleared after they've been actioned or cleared in various scenarios. For the most part actions we take against local users or submissions on local communities will also be reflected on other instances. Actions taken on Lemmy.ca on remote users or submissions on remote communities only reflect for those browsing through lemmy.ca and admins/mods of other instances/remote communities still need to take their own separate action.
Edit: We generally will not take action regarding content on remote communities that violate the remote community's rules. We are mostly concerned about things that break our instance rules and leave it for moderators of remote communities to deal with those. We will still see the reports, and it's important to make the reports so remote admins/mods can take action on them. We simply "resolve" or clear those reports from our local mod queue which still leaves it visible for the remote admins/mods.