Plenty there to draw. Not sure what more you need? DA has the occasional decent free ref in their stock photos/models section. There are plenty of other resources of course...most of which have copyright.
What would Caravaggio do?
They are 3D models of questionable quality, not humans. Their muscles don't move or react no matter how they are posed, and you can't trust that they react in the same way as people (it's easy to put a 3D model into a slightly skewed pose that would be uncomfortable or impossible in real life), they have no weight in how they stand, they can be easily in off-balance etc etc. If you want to learn how to draw real people, draw real people.