I reinstalled exactly as you showed. Each time I was asked to overwrite the appropriate files, and did so. Started Civ and same missing art model for Spain Jinete. The Moar_Units files that are to go in Documents\My Games\Sid Meier's Civilization VI\Mods, should those be loose or in the Moar_Units folder? I've tried both methods, and doesn't seem to make any difference.