There are few who came here, like spacebones, to share what they had before. But the fact is that many will never again share their freebies, either they don't wish another place, or they are gone themselves since a long time.

There are 2 or 3 freebies from Mylochka well installed directly on DA, but that's all. You can see few of them still online by there:

Area1

Area2

Yet, I think that concerning the links to Sharecg, not only Miraheze but Renderosity oldies should be checked. Alas, it's taking a lot of time, I know that by experience.