Do the Roman catacombs confirm the early Church believed in the doctrine of the communion of saints?

Do the Roman catacombs confirm the early church believed in the doctrine of the communion of saints, which includes prayer for the dead, intercession of the saints, invocation of the saints, and the threefold nature of the Church, in particular, the Church triumphant and Church penitent? If so, what are some of the archaeological evidence in the catacombs that confirms the early Church held such beliefs?